Being is the general concept encompassing objective and subjective features of reality and existence. Anything that partakes in being is also called a "being", though often this usage is limited to entities that have subjectivity (as in the expression "human being"). The notion of "being" has, inevitably, been elusive and controversial in the history of philosophy, beginning in Western philosophy with attempts among the pre-Socratics to deploy it intelligibly.

As an example of efforts in recent times, Martin Heidegger (who himself drew on ancient Greek sources) adopted after German terms like Dasein to articulate the topic.[1] Several modern approaches build on such continental European exemplars as Heidegger, and apply metaphysical results to the understanding of human psychology and the human condition generally (notably in the Existentialist tradition).

By contrast, in mainstream Analytical philosophy the topic is more confined to abstract investigation, in the work of such influential theorists as W. V. O. Quine, to name one of many. One most fundamental question that continues to exercise philosophers is put by William James: "How comes the world to be here at all instead of the nonentity which might be imagined in its place? ... from nothing to being there is no logical bridge."[2]

The deficit of such a bridge was first encountered in history by the Pre-Socratic philosophers during the process of evolving a classification of all beings (noun). Aristotle, who wrote after the Pre-Socratics, applies the term category (perhaps not originally) to ten highest-level classes. They comprise one category of substance (ousiae) existing independently (man, tree) and nine categories of accidents, which can only exist in something else (time, place). In Aristotle, substances are to be clarified by stating their definition: a note expressing a larger class (the genus) followed by further notes expressing specific differences (differentiae) within the class. The substance so defined was a species. For example, the species, man, may be defined as an animal (genus) that is rational (difference). As the difference is potential within the genus; that is, an animal may or may not be rational, the difference is not identical to, and may be distinct from, the genus.

Applied to being, the system fails to arrive at a definition for the simple reason that no difference can be found. The species, the genus, and the difference are all equally being: a being is a being that is being. The genus cannot be nothing because nothing is not a class of everything. The trivial solution that being is being added to nothing is only a tautology: being is being. There is no simpler intermediary between being and non-being that explains and classifies being.

Pre-Socratic reaction to this deficit was varied. As substance theorists they accepted a priori the hypothesis that appearances are deceiving, that reality is to be reached through reasoning. Parmenides reasoned that if everything is identical to being and being is a category of the same thing then there can be neither differences between things nor any change. To be different, or to change, would amount to becoming or being non-being; that is, not existing. Therefore, being is a homogeneous and non-differentiated sphere and the appearance of beings is illusory. Heraclitus, on the other hand, foreshadowed modern thought by denying existence. Reality does not exist, it flows, and beings are an illusion upon the flow.

Aristotle knew of this tradition when he began his Metaphysics, and had already drawn his own conclusion, which he presented under the guise of asking what being is:[3]

"And indeed the question which was raised of old is raised now and always, and is always the subject of doubt, viz., what being is, is just the question, what is substance? For it is this that some assert to be one, others more than one, and that some assert to be limited in number, others unlimited. And so we also must consider chiefly and primarily and almost exclusively what that is which is in this sense."

and reiterates in no uncertain terms:[4] "Nothing, then, which is not a species of a genus will have an essence – only species will have it ....". Being, however, for Aristotle, is not a genus.

One might expect a solution to follow from such certain language but none does. Instead Aristotle launches into a rephrasing of the problem, the Theory of Act and Potency. In the definition of man as a two-legged animal Aristotle presumes that "two-legged" and "animal" are parts of other beings, but as far as man is concerned, are only potentially man. At the point where they are united into a single being, man, the being, becomes actual, or real. Unity is the basis of actuality:[5] "... 'being' is being combined and one, and 'not being' is being not combined but more than one." Actuality has taken the place of existence, but Aristotle is no longer seeking to know what the actual is; he accepts it without question as something generated from the potential. He has found a "half-being" or a "pre-being", the potency, which is fully being as part of some other substance. Substances, in Aristotle, unite what they actually are now with everything they might become.

Some of Thomas Aquinas' propositions were reputedly condemned by Étienne Tempier, the local Bishop of Paris (not the Papal Magisterium itself) in 1270 and 1277,[6][7] but his dedication to the use of philosophy to elucidate theology was so thorough that he was proclaimed a Doctor of the Church in 1568. Those who adopt it are called Thomists.

In a single sentence, parallel to Aristotle's statement asserting that being is substance, St. Thomas pushes away from the Aristotelian doctrine:[8] "Being is not a genus, since it is not predicated univocally but only analogically." His term for analogy is Latin analogia. In the categorical classification of all beings, all substances are partly the same: man and chimpanzee are both animals and the animal part in man is "the same" as the animal part in chimpanzee. Most fundamentally all substances are matter, a theme taken up by science, which postulated one or more matters, such as earth, air, fire or water (Empedocles). In today's chemistry the carbon, hydrogen, oxygen and nitrogen in a chimpanzee are identical to the same elements in a man.

The original text reads, "Although equivocal predications must be reduced to univocal, still in actions, the non-univocal agent must precede the univocal agent. For the non-univocal agent is the universal cause of the whole species, as for instance the sun is the cause of the generation of all men; whereas the univocal agent is not the universal efficient cause of the whole species (otherwise it would be the cause of itself, since it is contained in the species), but is a particular cause of this individual which it places under the species by way of participation. Therefore the universal cause of the whole species is not an univocal agent; and the universal cause comes before the particular cause. But this universal agent, whilst it is not univocal, nevertheless is not altogether equivocal, otherwise it could not produce its own likeness, but rather it is to be called an analogical agent, as all univocal predications are reduced to one first non-univocal analogical predication, which is being."[9]

If substance is the highest category and there is no substance, being, then the unity perceived in all beings by virtue of their existing must be viewed in another way. St. Thomas chose the analogy: all beings are like, or analogous to, each other in existing. This comparison is the basis of his Analogy of Being. The analogy is said of being in many different ways, but the key to it is the real distinction between existence and essence. Existence is the principle that gives reality to an essence not the same in any way as the existence: "If things having essences are real, and it is not of their essence to be, then the reality of these things must be found in some principle other than (really distinct from) their essence."[10] Substance can be real or not. What makes an individual substance – a man, a tree, a planet – real is a distinct act, a "to be", which actuates its unity. An analogy of proportion is therefore possible:[10] "essence is related to existence as potency is related to act."

Existences are not things; they do not themselves exist, they lend themselves to essences, which do not intrinsically have them. They have no nature; an existence receives its nature from the essence it actuates. Existence is not being; it gives being – here a customary phrase is used, existence is a principle (a source) of being, not a previous source, but one which is continually in effect. The stage is set for the concept of God as the cause of all existence, who, as the Almighty, holds everything actual without reason or explanation as an act purely of will.

Aristotle's classificatory scheme had included the five predicables, or characteristics that might be predicated of a substance. One of these was the property, an essential universal true of the species, but not in the definition (in modern terms, some examples would be grammatical language, a property of man, or a spectral pattern characteristic of an element, both of which are defined in other ways). Pointing out that predicables are predicated univocally of substances; that is, they refer to "the same thing" found in each instance, St. Thomas argued that whatever can be said about being is not univocal, because all beings are unique, each actuated by a unique existence. It is the analogous possession of an existence that allows them to be identified as being; therefore, being is an analogous predication.

Whatever can be predicated of all things is universal-like but not universal, category-like but not a category. St. Thomas called them (perhaps not originally) the transcendentia, "transcendentals", because they "climb above" the categories, just as being climbs above substance. Later academics also referred to them as "the properties of being."[11] The number is generally three or four.

In this modern linguistic approach, it is noticed that the original language of the source, e.g. Greek (like German or French or English), has only one word for two concepts, ast and hast, or, like Arabic, has no word at all for either word. It therefore exploits the Persian hast (existential is) versus ast (predicative is or copula) to address both Western and Islamic ontological arguments on being and existence.[13]

This linguistic method shows the scope of confusion created by languages which cannot differentiate between existential be and copula. It manifests, for instance, that the main theme of Heidegger's Being and Time is astī (is-ness) rather than hastī (existence). When, in the beginning of his book, Heidegger claims that people always talk about existence in their everyday language, without knowing what it means, the example he resorts to is: "the sky is blue" which in Persian can be ONLY translated with the use of the copula ast, and says nothing about being or existence.

In the same manner, the linguistic method addresses the ontological works written in Arabic. Since Arabic, like Latin in Europe, had become the official language of philosophical and scientific works in the so-called Islamic World, the early Persian or Arab philosophers had difficulty discussing being or existence, since the Arabic language, like other Semitic languages, had no verb for either predicative "be" (copula) or existential "be". So if you try to translate the aforementioned Heidegger's example into Arabic it appears as السماء زرقاء (viz. "The Sky-- blue") with no linking "is" to be a sign of existential statement. To overcome the problem, when translating the ancient Greek philosophy, certain words were coined like ایس aysa (from Arabic لیس laysa 'not') for 'is'. Eventually the Arabic verb وجد wajada (to find) prevailed, since it was thought that whatever is existent, is to be "found" in the world. Hence existence or Being was called وجود wujud (Cf. Swedishfinns [found]> there exist; also the Medieval Latin coinage of exsistere 'standing out (there in the world)' > appear> exist).
Now, with regard to the fact that Persian, as the mother tongue of both Avicenna and Sadrā, was in conflict with either Greek or Arabic in this regard, these philosophers should have been warned implicitly by their mother tongue not to confuse two kinds of linguistic beings (viz. copula vs. existential). In fact when analyzed thoroughly, copula, or Persian ast ('is') indicates an ever-moving chain of relations with no fixed entity to hold onto (every entity, say A, will be dissolved into "A is B" and so on, as soon as one tries to define it). Therefore, the whole reality or what we see as existence ("found" in our world) resembles an ever-changing world of astī (is-ness) flowing in time and space. On the other hand, while Persian ast can be considered as the 3rd person singular of the verb 'to be', there is no verb but an arbitrary one supporting hast ('is' as an existential be= exists) has neither future nor past tense and nor a negative form of its own: hast is just a single untouchable lexeme. It needs no other linguistic element to be complete (Hast. is a complete sentence meaning "s/he it exists"). In fact, any manipulation of the arbitrary verb, e.g. its conjugation, turns hast back into a copula.

Eventually from such linguistic analyses, it appears that while astī (is-ness) would resemble the world of Heraclitus, hastī (existence) would rather approaches a metaphysical concept resembling the Parmenidas's interpretation of existence.

In this regard, Avicenna, who was a firm follower of Aristotle, could not accept either Heraclitian is-ness (where only constant was change), nor Parmenidean monist immoveable existence (the hastī itself being constant). To solve the contradiction, it so appeared to Philosophers of Islamic world that Aristotle considered the core of existence (i.e. its substance/essence) as a fixed constant, while its facade (accident) was prone to change. To translate such a philosophical image into Persian it is like having hastī (existence) as a unique constant core covered by astī (is-ness) as a cloud of ever-changing relationships. It is clear that the Persian language, deconstructs such a composite as a sheer mirage, since it is not clear how to link the interior core (existence) with the exterior shell (is-ness). Furthermore, hast cannot be linked to anything but itself (as it is self-referent).

The argument has a theological echos as well: assuming that God is the Existence, beyond time and space, a question is raised by philosophers of the Islamic world as how he, as a transcendental existence, may ever create or contact a world of is-ness in space-time.

However, Avicenna who was more philosopher than theologian, followed the same line of argumentation as that of his ancient master, Aristotle, and tried to reconcile between ast and hast, by considering the latter as higher order of existence than the former. It is like a hierarchical order of existence. It was a philosophical Tower of Babel that the restriction of his own mother tongue (Persian) would not allow to be built, but he could maneuver in Arabic by giving the two concepts the same name wujud, although with different attributes. So, implicitly, astī (is-ness) appears as ممکن الوجود "momken-al-wujud" (contingent being), and hastī (existence) as واجب الوجود "wājeb-al-wujud" (necessary being).

On the other hand, centuries later, Sadrā, chose a more radical route, by inclining towards the reality of astī (is-ness), as the true mode of existence, and tried to get rid of the concept of hastī (existence as fixed or immovable). Thus, in his philosophy, the universal movement penetrates deep into the Aristoteliansubstance/essence, in unison with changing accident. He called this deep existential change حرکت جوهری harekat-e jowhari (Substantial Movement). It is obvious that in such a changing existence, the whole world has to go through instantaneous annihilation and recreation incessantly, while as Avicenna had predicted in his remarks on Nature, such a universal change or substantial movement would eventually entail the shortening and lengthening of time as well which has never been observed. This logical objection, which was made on Aristotle's argumentation, could not be answered in the ancient times or medieval age, but now it does not sound contradictory to the real nature of Time (as addressed in relativity theory), so by a reverse argument, a philosopher may indeed deduce that everything is changing (moving) even in the deepest core of Being.

Although innovated in the late medieval period, Thomism was dogmatized in the Renaissance. From roughly 1277 to 1567, it dominated the philosophic landscape. The rationalist philosophers, however, with a new emphasis on Reason as a tool of the intellect, brought the classical and medieval traditions under new scrutiny, exercising a new concept of doubt, with varying outcomes. Foremost among the new doubters were the empiricists, the advocates of scientific method, with its emphasis on experimentation and reliance on evidence gathered from sensory experience. In parallel with the revolutions against rising political absolutism based on established religion and the replacement of faith by reasonable faith, new systems of metaphysics were promulgated in the lecture halls by charismatic professors, such as Immanuel Kant, and Hegel. The late 19th and 20th centuries featured an emotional return to the concept of existence under the name of existentialism. These philosophers were concerned mainly with ethics and religion. The metaphysical side became the domain of the phenomenalists. In parallel with these philosophies Thomism continued under the protection of the Catholic Church; in particular, the Jesuit order.

Rationalism and empiricism have had many definitions, most concerned with specific schools of philosophy or groups of philosophers in particular countries, such as Germany. In general rationalism is the predominant school of thought in the multi-national, cross-cultural Age of reason, which began in the century straddling 1600 as a conventional date,[14] empiricism is the reliance on sensory data[15] gathered in experimentation by scientists of any country, who, in the Age of Reason were rationalists. An early professed empiricist, Thomas Hobbes, known as an eccentric denizen of the court of Charles II of England (an "old bear"), published in 1651 Leviathan, a political treatise written during the English civil war, containing an early manifesto in English of rationalism.

"The Latines called Accounts of mony Rationes ... and thence it seems to proceed that they extended the word Ratio, to the faculty of Reckoning in all other things....When a man reasoneth hee does nothing else but conceive a summe totall ... For Reason ... is nothing but Reckoning ... of the consequences of generall names agreed upon, for the marking and signifying of our thoughts ...."

In Hobbes reasoning is the right process of drawing conclusions from definitions (the "names agreed upon"). He goes on to define error as self-contradiction of definition ("an absurdity, or senselesse Speech"[17]) or conclusions that do not follow the definitions on which they are supposed to be based. Science, on the other hand, is the outcome of "right reasoning," which is based on "natural sense and imagination", a kind of sensitivity to nature, as "nature it selfe cannot erre."

Having chosen his ground carefully Hobbes launches an epistemological attack on metaphysics. The academic philosophers had arrived at the Theory of Matter and Form from consideration of certain natural paradoxes subsumed under the general heading of the Unity Problem. For example, a body appears to be one thing and yet it is distributed into many parts. Which is it, one or many? Aristotle had arrived at the real distinction between matter and form, metaphysical components whose interpenetration produces the paradox. The whole unity comes from the substantial form and the distribution into parts from the matter. Inhering in the parts giving them really distinct unities are the accidental forms. The unity of the whole being is actuated by another really distinct principle, the existence.

If nature cannot err, then there are no paradoxes in it; to Hobbes, the paradox is a form of the absurd, which is inconsistency:[18] "Natural sense and imagination, are not subject to absurdity" and "For error is but a deception ... But when we make a generall assertion, unlesse it be a true one, the possibility of it is inconceivable. And words whereby we conceive nothing but the sound, are those we call Absurd ...." Among Hobbes examples are "round quadrangle", "immaterial substance", "free subject."[17] Of the scholastics he says:[19]

"Yet they will have us beleeve, that by the Almighty power of God, one body may be at one and the same time in many places [the problem of the universals]; and many bodies at one and the same time in one place [the whole and the parts]; ... And these are but a small part of the Incongruencies they are forced to, from their disputing philosophically, instead of admiring, and adoring of the Divine and Incomprehensible Nature ...."

The real distinction between essence and existence, and that between form and matter, which served for so long as the basis of metaphysics, Hobbes identifies as "the Error of Separated Essences."[20] The words "Is, or Bee, or Are, and the like" add no meaning to an argument nor do derived words such as "Entity, Essence, Essentially, Essentiality", which "are the names of nothing"[21] but are mere "Signes" connecting "one name or attribute to another: as when we say, "a man is a living body", we mean not that the man is one thing, the living body another, and the is, or being a third: but that the man, and the living body, is the same thing; ..." Metaphysiques, Hobbes says, is "far from the possibility of being understood" and is "repugnant to natural reason."[22]

Being to Hobbes (and the other empiricists) is the physical universe:[23]

The world, (I mean ... the Universe, that is, the whole masse of all things that are) is corporeall, that is to say, Body; and hath the dimension of magnitude, namely, Length, Bredth and Depth: also every part of Body, is likewise Body ... and consequently every part of the Universe is Body, and that which is not Body, is no part of the Universe: and because the Universe is all, that which is no part of it is nothing; and consequently no where."

Hobbes' view is representative of his tradition. As Aristotle offered the categories and the act of existence, and Aquinas the analogy of being, the rationalists also had their own system, the great chain of being, an interlocking hierarchy of beings from God to dust.

Some philosophers deny that the concept of "being" has any meaning at all, since we only define an object's existence by its relation to other objects, and actions it undertakes. The term "I am" has no meaning by itself; it must have an action or relation appended to it. This in turn has led to the thought that "being" and nothingness are closely related, developed in existential philosophy.

Existentialist philosophers such as Sartre, as well as continental philosophers such as Hegel and Heidegger have also written extensively on the concept of being. Hegel distinguishes between the being of objects (being in itself) and the being of people (Geist). Hegel, however, did not think there was much hope for delineating a "meaning" of being, because being stripped of all predicates is simply nothing.

Heidegger, in his quest to re-pose the original pre-Socratic question of Being, wondered at how to meaningfully ask the question of the meaning of being, since it is both the greatest, as it includes everything that is, and the least, since no particular thing can be said of it. He distinguishes between different modes of beings: a privative mode is present-at-hand, whereas beings in a fuller sense are described as ready-to-hand. The one who asks the question of Being is described as Da-sein ("there/here-being") or being-in-the-world. Sartre, popularly understood as misreading Heidegger (an understanding supported by Heidegger's essay "Letter on Humanism" which responds to Sartre's famous address, "Existentialism is a Humanism"), employs modes of being in an attempt to ground his concept of freedom ontologically by distinguishing between being-in-itself and being-for-itself.

Being is also understood as one's "state of being," and hence its common meaning is in the context of human (personal) experience, with aspects that involve expressions and manifestations coming from an innate "being", or personal character. Heidegger coined the term "dasein" for this property of being in his influential work Being and Time ("this entity which each of us is himself…we shall denote by the term 'dasein.'"[1]), in which he argued that being or dasein links one's sense of one's body to one's perception of world. Heidegger, amongst others, referred to an innate language as the foundation of being, which gives signal to all aspects of being.

^For text of condemnations 1277 (technically still 1276 at the date, since before 25 of March) see David Piché, La condemnation parisienne de 1277, [1], parallel Latin text with his French translation, or online list Latin only with footnotes, by Hans-Georg Lundahl, [2]

^Wippel, John F. (2000). The metaphysical thought of Thomas Aquinas: from finite being to uncreated being. Monographs of the Society for Mediaeval and Renaissance Philosophy, No. 1. The Catholic University of America Press. p. 75.

1.
Philosophy
–
Philosophy is the study of general and fundamental problems concerning matters such as existence, knowledge, values, reason, mind, and language. The term was coined by Pythagoras. Philosophical methods include questioning, critical discussion, rational argument and systematic presentation, classic philosophical questions include, Is it possible to know anything and to prove it. However, philosophers might also pose more practical and concrete questions such as, is it better to be just or unjust. Historically, philosophy encompassed any body of knowledge, from the time of Ancient Greek philosopher Aristotle to the 19th century, natural philosophy encompassed astronomy, medicine and physics. For example, Newtons 1687 Mathematical Principles of Natural Philosophy later became classified as a book of physics, in the 19th century, the growth of modern research universities led academic philosophy and other disciplines to professionalize and specialize. In the modern era, some investigations that were part of philosophy became separate academic disciplines, including psychology, sociology. Other investigations closely related to art, science, politics, or other pursuits remained part of philosophy, for example, is beauty objective or subjective. Are there many scientific methods or just one, is political utopia a hopeful dream or hopeless fantasy. Major sub-fields of academic philosophy include metaphysics, epistemology, ethics, aesthetics, political philosophy, logic, philosophy of science, since the 20th century, professional philosophers contribute to society primarily as professors, researchers and writers. Traditionally, the term referred to any body of knowledge. In this sense, philosophy is related to religion, mathematics, natural science, education. This division is not obsolete but has changed, Natural philosophy has split into the various natural sciences, especially astronomy, physics, chemistry, biology and cosmology. Moral philosophy has birthed the social sciences, but still includes value theory, metaphysical philosophy has birthed formal sciences such as logic, mathematics and philosophy of science, but still includes epistemology, cosmology and others. Many philosophical debates that began in ancient times are still debated today, colin McGinn and others claim that no philosophical progress has occurred during that interval. Chalmers and others, by contrast, see progress in philosophy similar to that in science, in one general sense, philosophy is associated with wisdom, intellectual culture and a search for knowledge. In that sense, all cultures and literate societies ask philosophical questions such as how are we to live, a broad and impartial conception of philosophy then, finds a reasoned inquiry into such matters as reality, morality and life in all world civilizations. Socrates was an influential philosopher, who insisted that he possessed no wisdom but was a pursuer of wisdom

2.
Plato
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Plato was a philosopher in Classical Greece and the founder of the Academy in Athens, the first institution of higher learning in the Western world. He is widely considered the most pivotal figure in the development of philosophy, unlike nearly all of his philosophical contemporaries, Platos entire work is believed to have survived intact for over 2,400 years. Along with his teacher, Socrates, and his most famous student, Aristotle, Plato laid the foundations of Western philosophy. Alfred North Whitehead once noted, the safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato. In addition to being a figure for Western science, philosophy. Friedrich Nietzsche, amongst other scholars, called Christianity, Platonism for the people, Plato was the innovator of the written dialogue and dialectic forms in philosophy, which originate with him. He was not the first thinker or writer to whom the word “philosopher” should be applied, few other authors in the history of Western philosophy approximate him in depth and range, perhaps only Aristotle, Aquinas and Kant would be generally agreed to be of the same rank. Due to a lack of surviving accounts, little is known about Platos early life, the philosopher came from one of the wealthiest and most politically active families in Athens. Ancient sources describe him as a bright though modest boy who excelled in his studies, the exact time and place of Platos birth are unknown, but it is certain that he belonged to an aristocratic and influential family. Based on ancient sources, most modern scholars believe that he was born in Athens or Aegina between 429 and 423 BCE. According to a tradition, reported by Diogenes Laertius, Ariston traced his descent from the king of Athens, Codrus. Platos mother was Perictione, whose family boasted of a relationship with the famous Athenian lawmaker, besides Plato himself, Ariston and Perictione had three other children, these were two sons, Adeimantus and Glaucon, and a daughter Potone, the mother of Speusippus. The brothers Adeimantus and Glaucon are mentioned in the Republic as sons of Ariston, and presumably brothers of Plato, but in a scenario in the Memorabilia, Xenophon confused the issue by presenting a Glaucon much younger than Plato. Then, at twenty-eight, Hermodorus says, went to Euclides in Megara, as Debra Nails argues, The text itself gives no reason to infer that Plato left immediately for Megara and implies the very opposite. Thus, Nails dates Platos birth to 424/423, another legend related that, when Plato was an infant, bees settled on his lips while he was sleeping, an augury of the sweetness of style in which he would discourse about philosophy. Ariston appears to have died in Platos childhood, although the dating of his death is difficult. Perictione then married Pyrilampes, her mothers brother, who had served many times as an ambassador to the Persian court and was a friend of Pericles, Pyrilampes had a son from a previous marriage, Demus, who was famous for his beauty. Perictione gave birth to Pyrilampes second son, Antiphon, the half-brother of Plato and these and other references suggest a considerable amount of family pride and enable us to reconstruct Platos family tree

3.
Immanuel Kant
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Immanuel Kant was a German philosopher who is considered a central figure in modern philosophy. Kant took himself to have effected a Copernican revolution in philosophy and his beliefs continue to have a major influence on contemporary philosophy, especially the fields of metaphysics, epistemology, ethics, political theory, and aesthetics. Politically, Kant was one of the earliest exponents of the idea that peace could be secured through universal democracy. He believed that this will be the outcome of universal history. Kant wanted to put an end to an era of futile and speculative theories of human experience, Kant argued that our experiences are structured by necessary features of our minds. In his view, the shapes and structures experience so that, on an abstract level. Among other things, Kant believed that the concepts of space and time are integral to all human experience, as are our concepts of cause, Kant published other important works on ethics, religion, law, aesthetics, astronomy, and history. These included the Critique of Practical Reason, the Metaphysics of Morals, which dealt with ethics, and the Critique of Judgment, Immanuel Kant was born in 1724 in Königsberg, Prussia. His mother, Anna Regina Reuter, was born in Königsberg to a father from Nuremberg. His father, Johann Georg Kant, was a German harness maker from Memel, Immanuel Kant believed that his paternal grandfather Hans Kant was of Scottish origin. Kant was the fourth of nine children, baptized Emanuel, he changed his name to Immanuel after learning Hebrew. Young Kant was a solid, albeit unspectacular, student and he was brought up in a Pietist household that stressed religious devotion, humility, and a literal interpretation of the Bible. His education was strict, punitive and disciplinary, and focused on Latin and religious instruction over mathematics, despite his religious upbringing and maintaining a belief in God, Kant was skeptical of religion in later life, various commentators have labelled him agnostic. Common myths about Kants personal mannerisms are listed, explained, and refuted in Goldthwaits introduction to his translation of Observations on the Feeling of the Beautiful and Sublime. It is often held that Kant lived a strict and disciplined life. He never married, but seemed to have a social life — he was a popular teacher. He had a circle of friends whom he met, among them Joseph Green. A common myth is that Kant never traveled more than 16 kilometres from Königsberg his whole life, in fact, between 1750 and 1754 he worked as a tutor in Judtschen and in Groß-Arnsdorf

4.
Friedrich Nietzsche
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He began his career as a classical philologist before turning to philosophy. He became the youngest ever to hold the Chair of Classical Philology at the University of Basel in 1869, Nietzsche resigned in 1879 due to health problems that plagued him most of his life, and he completed much of his core writing in the following decade. In 1889, at age 44, he suffered a collapse and he lived his remaining years in the care of his mother, and then with his sister Elisabeth Förster-Nietzsche, and died in 1900. Nietzsches body of work touched widely on art, philology, history, religion, tragedy, culture, and science, and drew inspiration from figures such as Schopenhauer, Wagner. His writing spans philosophical polemics, poetry, cultural criticism, and fiction while displaying a fondness for aphorism, born on 15 October 1844, Nietzsche grew up in the small town of Röcken, near Leipzig, in the Prussian Province of Saxony. He was named after King Frederick William IV of Prussia, who turned forty-nine on the day of Nietzsches birth, Nietzsches parents, Carl Ludwig Nietzsche, a Lutheran pastor and former teacher, and Franziska Oehler, married in 1843, the year before their sons birth. They had two children, a daughter, Elisabeth Förster-Nietzsche, born in 1846, and a second son, Ludwig Joseph. Nietzsches father died from an ailment in 1849, Ludwig Joseph died six months later. The family then moved to Naumburg, where they lived with Nietzsches maternal grandmother, after the death of Nietzsches grandmother in 1856, the family moved into their own house, now Nietzsche-Haus, a museum and Nietzsche study centre. Nietzsche attended a school and then, later, a private school, where he became friends with Gustav Krug, Rudolf Wagner. In 1854, he began to attend Domgymnasium in Naumburg, because his father had worked for the state the now-fatherless Nietzsche was offered a scholarship to study at the internationally recognized Schulpforta. He transferred and studied there from 1858 to 1864, becoming friends with Paul Deussen and he also found time to work on poems and musical compositions. Nietzsche led Germania, a music and literature club, during his summers in Naumburg. His end-of-semester exams in March 1864 showed a 1 in Religion and German, a 2a in Greek and Latin, a 2b in French, History, and Physics, while at Pforta, Nietzsche had a penchant for pursuing subjects that were considered unbecoming. The teacher who corrected the essay gave it a mark but commented that Nietzsche should concern himself in the future with healthier, more lucid. After graduation in September 1864, Nietzsche commenced studies in theology, for a short time he and Deussen became members of the Burschenschaft Frankonia. After one semester, he stopped his studies and lost his faith. In June 1865, at the age of 20, Nietzsche wrote to his sister Elisabeth, who was deeply religious, a letter regarding his loss of faith

5.
Gautama Buddha
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Gautama Buddha, also known as Siddhārtha Gautama, Shakyamuni Buddha, or simply the Buddha, after the title of Buddha, was an ascetic and sage, on whose teachings Buddhism was founded. He is believed to have lived and taught mostly in the part of ancient India sometime between the sixth and fourth centuries BCE. Gautama taught a Middle Way between sensual indulgence and the severe asceticism found in the śramaṇa movement common in his region and he later taught throughout other regions of eastern India such as Magadha and Kosala. Gautama is the figure in Buddhism. He is recognized by Buddhists as a teacher who attained full Buddhahood. Accounts of his life, discourses, and monastic rules are believed by Buddhists to have been summarized after his death, various collections of teachings attributed to him were passed down by oral tradition and first committed to writing about 400 years later. Scholars are hesitant to make unqualified claims about the facts of the Buddhas life. Apart from the Vedic Brahmins, the Buddhas lifetime coincided with the flourishing of influential schools of thought like Ājīvika, Cārvāka, Jainism. Brahmajala Sutta records sixty-two such schools of thought, thus, Buddha was just one of the many śramaṇa philosophers of that time. The times of Gautamas birth and death are uncertain, most historians in the early 20th century dated his lifetime as circa 563 BCE to 483 BCE. These alternative chronologies, however, have not yet accepted by all historians. It was either a republic, or an oligarchy, and his father was an elected chieftain. He obtained his enlightenment in Bodh Gaya, gave his first sermon in Sarnath, no written records about Gautama were found from his lifetime or some centuries thereafter. One Edict of Asoka, who reigned from circa 269 BCE to 232 BCE, another one of his edicts mentions the titles of several Dhamma texts, establishing the existence of a written Buddhist tradition at least by the time of the Maurya era. These texts may be the precursor of the Pāli Canon and they are written in the Gāndhārī language using the Kharosthi script on twenty-seven birch bark manuscripts and date from the first century BCE to the third century CE. The sources for the life of Siddhārtha Gautama are a variety of different and these include the Buddhacarita, Lalitavistara Sūtra, Mahāvastu, and the Nidānakathā. Of these, the Buddhacarita is the earliest full biography, a poem written by the poet Aśvaghoṣa in the first century CE. The Lalitavistara Sūtra is the next oldest biography, a Mahāyāna/Sarvāstivāda biography dating to the 3rd century CE, the Mahāvastu from the Mahāsāṃghika Lokottaravāda tradition is another major biography, composed incrementally until perhaps the 4th century CE

6.
Confucius
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Confucius was a Chinese teacher, editor, politician, and philosopher of the Spring and Autumn period of Chinese history. The philosophy of Confucius emphasized personal and governmental morality, correctness of social relationships, justice and his followers competed successfully with many other schools during the Hundred Schools of Thought era only to be suppressed in favor of the Legalists during the Qin Dynasty. Following the victory of Han over Chu after the collapse of Qin, aphorisms concerning his teachings were compiled in the Analects, but only many years after his death. Confuciuss principles had a basis in common Chinese tradition and belief and he championed strong family loyalty, ancestor veneration, and respect of elders by their children and of husbands by their wives. He also recommended family as a basis for ideal government and he espoused the well-known principle Do not do to others what you do not want done to yourself, the Golden Rule. Confucius is also a deity in Daoism. According to tradition, three generations before Confucius time, his ancestors had migrated from the Song state to the Lu state, Confucius was a descendant of the Shang dynasty Kings through the Dukes of Song. Confucius family and personal name respectively was Kong Qiu, in Chinese, he is most often known as Kongzi. He is also known by the honorific Kong Fuzi, in the Wade–Giles system of romanization, the honorific name is rendered as Kung Fu-tzu. The Latinized name Confucius is derived from Kong Fuzi, and was first coined by 16th-century Jesuit missionaries to China, within the Analects, he is often referred to simply as the Master. In 1 AD, Confucius was given his first posthumous name, in 1530, he was declared the Extremely Sage Departed Teacher. He is also known separately as the Great Sage, First Teacher and it is generally thought that Confucius was born on September 28,551 BC. His birthplace was in Zou, Lu state and his father Kong He, also known as Shuliang He, was an officer in the Lu military. Kong died when Confucius was three years old, and Confucius was raised by his mother Yan Zhengzai in poverty and his mother would later die at less than 40 years of age. At age 19 he married his wife Qiguan, and a year later the couple had their first child, Qiguan and Confucius would later have two daughters together, one of whom is thought to have died early in her life as a child. Confucius was educated at schools for commoners, where he studied and learned the Six Arts, Confucius was born into the class of shi, between the aristocracy and the common people. When his mother died, Confucius is said to have mourned for three years, as was the tradition, the Lu state was headed by a ruling ducal house. Under the duke were three families, whose heads bore the title of viscount and held hereditary positions in the Lu bureaucracy

7.
Averroes
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Ibn Rushd, full name, often Latinized as Averroes, was a medieval Andalusian polymath. Ibn Rushd was born in Córdoba, Al Andalus, and died at Marrakesh in present-day Morocco and his body was interred in his family tomb at Córdoba. The 13th-century philosophical movement in Latin Christian and Jewish tradition based on Ibn Rushds work is called Averroism, Ibn Rushd was a defender of Aristotelian philosophy against Ashari theologians led by Al-Ghazali. Although highly regarded as a scholar of the Maliki school of Islamic law. Whereas al-Ghazali believed that any act of a natural phenomenon occurred only because God willed it to happen. Largely considered as the father of modern Secularism, Ibn Rushd had a impact on Christian Europe. Latin translations of Ibn Rushds work led the way to the popularization of Aristotle, Averroes is the Medieval Latin form of the Hebrew translation Aben Rois or Rosh of the Arabic Ibn Rushd. It is also seen as Averroës, Averrhoës, or Averroès to mark that the o and e are separate vowels, Ibn Rushd was born in Córdoba to a family with a long and well-respected tradition of legal and public service. His grandfather Abu Al-Walid Muhammad was chief judge of Córdoba under the Almoravids and his father, Abu Al-Qasim Ahmad, held the same position until the Almoravids were replaced by the Almohads in 1146. Ibn Rushds education followed a path, beginning with studies in Hadith, linguistics, jurisprudence. Throughout his life he wrote extensively on philosophy and religion, attributes of God, origin of the universe, metaphysics and it is generally believed that he was once tutored by Ibn Bajjah. His medical education was directed under Abu Jafar ibn Harun of Trujillo in Seville, Ibn Rushd began his career with the help of Ibn Tufail, the author of Hayy ibn Yaqdhan and philosophic vizier of Almohad king Abu Yaqub Yusuf who was an amateur of philosophy and science. It was Ibn Tufail who introduced him to the court and to Ibn Zuhr, the great Muslim physician, who became Ibn Rushds teacher and friend. He said that if someone took on these books who could summarize them and clarify their aims after first thoroughly understanding them himself, if you have the energy, Ibn Tufayl told me, you do it. Im confident you can, because I know what a good mind and devoted character you have and you understand that only my great age, the cares of my office — and my commitment to another task that I think even more vital — keep me from doing it myself. Ibn Rushd also studied the works and philosophy of Ibn Bajjah, however, while the thought of his mentors Ibn Tufail and Ibn Bajjah were mystic to an extent, the thought of Ibn Rushd was purely rationalist. Together, the three men are considered the greatest Andalusian philosophers, Ibn Rushd devoted the next 30 years to his philosophical writings. In 1160, Ibn Rushd was made Qadi of Seville and he served in many court appointments in Seville, Cordoba, sometime during the reign of Yaqub al-Mansur, Averroess political career was abruptly ended and he faced severe criticism from the Fuqaha of the time

8.
Analytic philosophy
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Analytic philosophy is a style of philosophy that became dominant in English-speaking countries at the beginning of the 20th century. In the United Kingdom, United States, Canada, Australia, New Zealand, and Scandinavia, as a historical development, analytical philosophy refers to certain developments in early 20th-century philosophy that were the historical antecedents of the current practice. Central figures in historical development are Bertrand Russell, Ludwig Wittgenstein, G. E. Moore, Gottlob Frege. This may be contrasted with the traditional foundationalism, which considers philosophy to be a science that investigates the fundamental reasons. Consequently, many philosophers have considered their inquiries as continuous with, or subordinate to. This is an attitude that begins with John Locke, who described his work as that of an underlabourer to the achievements of scientists such as Newton. During the twentieth century, the most influential advocate of the continuity of philosophy with science was Willard Van Orman Quine, the principle that the logical clarification of thoughts can be achieved only by analysis of the logical form of philosophical propositions. The logical form of a proposition is a way of representing it, to reduce it to simpler components if necessary, however, analytic philosophers disagree widely about the correct logical form of ordinary language. The neglect of generalized philosophical systems in favour of more restricted inquiries stated rigorously and it is thus able, in regard to certain problems, to achieve definite answers, which have the quality of science rather than of philosophy. Its methods, in respect, resemble those of science. Analytic philosophy is often understood in contrast to other traditions, most notably continental philosophies such as existentialism and phenomenology. British idealism, as taught by such as F. H. Bradley and Thomas Hill Green. With reference to this basis the initiators of analytic philosophy, G. E. Moore and Bertrand Russell. Inspired by developments in logic, the early Russell claimed that the problems of philosophy can be solved by showing the simple constituents of complex notions. An important aspect of British idealism was logical holism — the opinion that the aspects of the world cannot be wholly without also knowing the whole world. This is closely related to the opinion that relations between items are actually internal relations, that is, properties internal to the nature of those items. Russell, along with Wittgenstein, in response promulgated logical atomism, Frege was also influential as a philosopher of mathematics in Germany at the beginning of the 20th century. Like Frege, Russell attempted to show that mathematics is reducible to logical fundamentals in The Principles of Mathematics, later, his book written with Whitehead, Principia Mathematica, encouraged many philosophers to renew their interest in the development of symbolic logic

9.
Aristotelianism
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Aristotelianism is a tradition of philosophy that takes its defining inspiration from the work of Aristotle. The works of Aristotle were initially defended by the members of the Peripatetic school, and, later on, by the Neoplatonists, who produced many commentaries on Aristotles writings. Moses Maimonides adopted Aristotelianism from the Islamic scholars and based his famous Guide for the Perplexed on it, scholars such as Albertus Magnus and Thomas Aquinas interpreted and systematized Aristotles works in accordance with Christian theology. Although this project was criticized by Trendelenburg and Brentano as non-Aristotelian, postmodernists, in contrast, reject Aristotelianisms claim to reveal important theoretical truths. In this, they follow Heideggers critique of Aristotle as the greatest source of the tradition of Western philosophy. Recent Aristotelian ethical and practical philosophy, such as that of Gadamer, the most famous contemporary Aristotelian philosopher is Alasdair MacIntyre. Politically and socially, it has been characterized as a newly revolutionary Aristotelianism and this may be contrasted with the more conventional, apolitical and effectively conservative uses of Aristotle by, for example, Gadamer and McDowell. Other important contemporary Aristotelian theorists include Fred D. Miller, Jr. in politics, the original followers of Aristotle were the members of the Peripatetic school. The most prominent members of the school after Aristotle were Theophrastus and Strato of Lampsacus, during the Roman era the school concentrated on preserving and defending his work. The most important figure in this regard was Alexander of Aphrodisias who commentated on Aristotles writings, in the Abbasid Empire, many foreign works were translated into Arabic, large libraries were constructed, and scholars were welcomed. Under the caliphs Harun al-Rashid and his son Al-Mamun, the House of Wisdom in Baghdad flourished, Christian scholar Hunayn ibn Ishaq was placed in charge of the translation work by the caliph. In his lifetime, Ishaq translated 116 writings, including works by Plato and Aristotle, into Syriac, al-Kindi was the first of the Muslim Peripatetic philosophers, and is known for his efforts to introduce Greek and Hellenistic philosophy to the Arab world. He incorporated Aristotelian and Neoplatonist thought into an Islamic philosophical framework and this was an important factor in the introduction and popularization of Greek philosophy in the Muslim intellectual world. The philosopher Al-Farabi had great influence on science and philosophy for several centuries and his work, aimed at synthesis of philosophy and Sufism, paved the way for the work of Avicenna. Avicenna was one of the interpreters of Aristotle. The school of thought he founded became known as Avicennism, which was built on ingredients and conceptual building blocks that are largely Aristotelian and Neoplatonist. At the western end of the Mediterranean Sea, during the reign of Al-Hakam II in Córdoba, a massive effort was undertaken. Averroes, who spent much of his life in Cordoba and Seville, was distinguished as a commentator of Aristotle

10.
Buddhist philosophy
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Indian Buddhists sought this understanding not just from the revealed teachings of the Buddha, but through philosophical analysis and rational deliberation. Buddhist thinkers in India and subsequently in East Asia have covered topics as varied as phenomenology, ethics, ontology, epistemology, logic, a recurrent theme in Buddhist philosophy has been the reification of concepts, and the subsequent return to the Buddhist Middle Way. Particular points of Buddhist philosophy have often been the subject of disputes between different schools of Buddhism and these elaborations and disputes gave rise to various schools in early Buddhism of Abhidharma, and to the Mahayana traditions and schools of the prajnaparamita, Madhyamaka, Buddha-nature and Yogacara. Philosophy in India was aimed mainly at spiritual liberation and had soteriological goals, virtually all the great philosophical systems of India, Sāṅkhya, Advaitavedānta, Mādhyamaka and so forth, were preeminently concerned with providing a means to liberation or salvation. It was a tacit assumption with these systems that if their philosophy were correctly understood and assimilated, the goal of Buddhist philosophy is nirvana and to achieve this it needs to investigate the nature of the world. For the Indian Buddhist philosophers, the teachings of the Buddha were not meant to be taken on faith alone, the Buddha also expect his disciples to approach him as a teacher in a critical fashion and scrutinize his actions and words, as shown in the Vīmaṃsaka Sutta. The Buddha was a north Indian sramana from Magadha and he cultivated various yogic techniques and ascetic practices and taught throughout north India, where his teachings took hold. These teachings are preserved in the Pali Nikayas and in the Agamas as well as in other surviving fragmentary textual collections, dating these texts is difficult and there is disagreement on how much of this material goes back to a single religious founder. The Buddha defined his teaching as the middle way, in the Dhammacakkappavattana Sutta, this is used to refer to the fact that his teachings steer a middle course between the extremes of asceticism and bodily denial and sensual hedonism or indulgence. Many sramanas of the Buddhas time placed much emphasis on a denial of the body, using such as fasting. The Buddha however, realized that the mind was embodied and causally dependent on the body, according to Vetter, the description of the Buddhist path may initially have been as simple as the term the middle way. In time, this description was elaborated, resulting in the description of the eightfold path. Vetter argues that the eightfold path constitutes a body of practices which prepare one, and lead up to, according to Vetter and Bronkhorst, dhyāna constituted the original liberating practice, while discriminating insight into transiency as a separate path to liberation was a later development. According to Bronkhorst, the four truths may not have been formulated in earliest Buddhism, Lambert Schmithausen concluded that the four truths were a later development in early Buddhism. Carol Anderson, following Lambert Schmithausen and K. R, norman, notes that the four truths are missing in critical passages in the canon, and states. According to some scholars, the outlook of earliest Buddhism was primarily negative. Only knowledge that is useful in achieving enlightenment is valued, the four noble truths or truths of the noble one are a central feature of the teachings and are put forth in the Dhammacakkappavattana Sutta. The first truth of Dukkha, often translated as suffering, is the inherent unsatisfactoriness of life

11.
Chinese philosophy
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Early Shang Dynasty thought was based upon cycles. Thus, this notion, which remained relevant throughout Chinese history, in juxtaposition, it also marks a fundamental distinction from western philosophy, in which the dominant view of time is a linear progression. During the Shang, fate could be manipulated by great deities, ancestor worship was present and universally recognized. There was also human and animal sacrifice, when the Shang were overthrown by the Zhou, a new political, religious and philosophical concept was introduced called the Mandate of Heaven. This mandate was said to be taken when rulers became unworthy of their position, Confucianism developed during the Spring and Autumn period from the teachings of the Chinese philosopher Confucius, who considered himself a retransmitter of Zhou values. His philosophy concerns the fields of ethics and politics, emphasizing personal and governmental morality, correctness of social relationships, justice, traditionalism, Confucianism was and continues to be a major influence in Chinese culture, the state of China and the surrounding areas of Southeast Asia. Before the Han dynasty the largest rivals to Confucianism were Chinese Legalism, Confucianism largely became the dominant philosophical school of China during the early Han Dynasty following the replacement of its contemporary, the more Taoistic Huang-Lao. The Six Dynasties era saw the rise of the Xuanxue philosophical school and the maturation of Chinese Buddhism, by the time of the Tang dynasty five-hundred years after Buddhisms arrival into China, it had transformed into a thoroughly Chinese religious philosophy dominated by the school of Zen Buddhism. Neo-Confucianism became highly popular during the Song dynasty and Ming Dynasty due in part to the eventual combination of Confucian. During the 19th and 20th centuries, Chinese philosophy integrated concepts from Western philosophy, the most notable examples are Sun Yat-Sens Three Principles of the People ideology and Mao Zedongs Maoism, a variant of Marxism–Leninism. In the modern Peoples Republic of China, the ideology is Deng Xiaopings market economy socialism. Although the Peoples Republic of China has been hostile to the philosophy of ancient China. In the post-Chinese economic reform era, modern Chinese philosophy has reappeared in forms such as the New Confucianism, as in Japan, philosophy in China has become a melting pot of ideas. It accepts new concepts, while attempting also to accord old beliefs their due, Chinese philosophy still carries profound influence amongst the people of East Asia, and even Southeast Asia. Around 500 BCE, after the Zhou state weakened and China moved into the Spring and Autumn period and this is known as the Hundred Schools of Thought. This period is considered the age of Chinese philosophy. Of the many schools founded at this time and during the subsequent Warring States period and it is a system of moral, social, political, and religious thought that has had tremendous influence on Chinese history, thought, and culture down to the 20th century. Some Westerners have considered it to have been the religion of imperial China because of its lasting influence on Asian culture

12.
Continental philosophy
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Continental philosophy is a set of 19th- and 20th-century philosophical traditions from mainland Europe. This sense of the term originated among English-speaking philosophers in the half of the 20th century. It is difficult to identify non-trivial claims that would be common to all the preceding philosophical movements, the term continental philosophy, like analytic philosophy, lacks clear definition and may mark merely a family resemblance across disparate philosophical views. Simon Glendinning has suggested that the term was originally more pejorative than descriptive, nonetheless, Michael E. Rosen has ventured to identify common themes that typically characterize continental philosophy. First, continental philosophers generally reject the view that the sciences are the only or most accurate way of understanding natural phenomena. This contrasts with many analytic philosophers who consider their inquiries as continuous with, or subordinate to, thus continental philosophy tends toward historicism. This tendency is very clear in the Marxist tradition, but is central in existentialism and post-structuralism. A final characteristic trait of continental philosophy is an emphasis on metaphilosophy, in the wake of the development and success of the natural sciences, continental philosophers have often sought to redefine the method and nature of philosophy. In some cases, this manifests as a renovation of the view that philosophy is the first, foundational. In other cases, it is held that philosophy investigates a domain that is irreducibly cultural or practical, and some continental philosophers doubt whether any conception of philosophy can coherently achieve its stated goals. This tradition, which has come to be known broadly as analytic philosophy, became dominant in Britain, russell and Moore made a dismissal of Hegelianism and its philosophical relatives a distinctive part of their new movement. Self-described analytic philosophy flourishes in France, including such as Jules Vuillemin, Vincent Descombes, Gilles Gaston Granger, François Recanati. Continental philosophy is defined in terms of a family of philosophical traditions. The history of philosophy is usually thought to begin with German idealism. As the institutional roots of continental philosophy in many cases directly descend from those of phenomenology, nonetheless, Husserl is also a respected subject of study in the analytic tradition. J. G. Merquior wrote, the most prestigious philosophizing in France took a very dissimilar path, one might say it all began with Henri Bergson. Carnaps paper argues that Heideggers lecture What Is Metaphysics, violates logical syntax to create nonsensical pseudo-statements. Moreover, Carnap claimed that many German metaphysicians of the era were similar to Heidegger in writing statements that were not merely false, but devoid of any meaning

13.
Existentialism
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While the predominant value of existentialist thought is commonly acknowledged to be freedom, its primary virtue is authenticity. Many existentialists have also regarded traditional systematic or academic philosophies, in style and content, as too abstract and remote from concrete human experience. Søren Kierkegaard is generally considered to have been the first existentialist philosopher and he proposed that each individual—not society or religion—is solely responsible for giving meaning to life and living it passionately and sincerely, or authentically. Existentialism became popular in the years following World War II, and strongly influenced many disciplines besides philosophy, including theology, drama, art, literature, and psychology. The term is seen as a historical convenience as it was first applied to many philosophers in hindsight. In fact, while existentialism is generally considered to have originated with Kierkegaard, Sartre posits the idea that what all existentialists have in common is the fundamental doctrine that existence precedes essence, as scholar Frederick Copleston explains. Sartre himself, in a lecture delivered in 1945, described existentialism as the attempt to draw all the consequences from a position of consistent atheism and this assertion comes from two sources. The Norwegian philosopher Erik Lundestad refers to the Danish philosopher Fredrik Christian Sibbern, Sibbern is supposed to have had two conversations in 1841, the first with Welhaven and the second with Kierkegaard. This was then brought to Kierkegaard by Sibbern, the second claim comes from the Norwegian historian Rune Slagstad, who claims to prove that Kierkegaard himself said the term existential was borrowed from the poet. He strongly believes that it was Kierkegaard himself who said that Hegelians do not study philosophy existentially, on the other hand, the Norwegian historian Anne-Lise Seip is critical of Slagstad, and believes the statement in fact stems from the Norwegian literary historian Cathrinus Bang. The actual life of the individuals is what constitutes what could be called their true essence instead of there being an arbitrarily attributed essence others use to define them, thus, human beings, through their own consciousness, create their own values and determine a meaning to their life. However, an existentialist philosopher would say such a wish constitutes an inauthentic existence - what Sartre would call bad faith, instead, the phrase should be taken to say that people are defined only insofar as they act and that they are responsible for their actions. For example, someone who acts cruelly towards other people is, by that act, furthermore, by this action of cruelty, such persons are themselves responsible for their new identity. This is as opposed to their genes, or human nature, as Sartre writes in his work Existentialism is a Humanism. Man first of all exists, encounters himself, surges up in the world—and defines himself afterwards. Of course, the positive, therapeutic aspect of this is also implied, A person can choose to act in a different way. Here it is clear that since humans can choose to be either cruel or good, they are, in fact. Sartres definition of existentialism was based on Heideggers magnum opus Being and this way of living, Heidegger called average everydayness

14.
Jain philosophy
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Jain philosophy is the oldest Indian philosophy that separates body from the soul completely. Jain philosophy deals with reality, cosmology, epistemology and Vitalism, the concept of non-injury or ahiṃsā lies at the core of Jain philosophy. Jain philosophy attempts to explain the rationale of being and existence, the nature of the Universe and its constituents, the nature of bondage and the means to achieve liberation. Jain texts expound that in every half-cycle of time, twenty-four tirthankaras grace this part of the Universe to teach the doctrine of right faith, right knowledge. Jain philosophy means the teachings of a Tirthankara which are recorded in Sacred Jain texts, the distinguishing features of Jain philosophy are, - Belief on independent existence of soul and matter. Refutation of the idea that a divine creator, owner, preserver or destroyer of the universe exists. Accent on relativity and multiple facets of truth and Morality and ethics based on liberation of soul, Jainism strongly upholds the individualistic nature of soul and personal responsibility for ones decisions, and that self-reliance and individual efforts alone are responsible for ones liberation. According to the Jain texts, the vitalities or life-principles are ten, namely the five senses, energy, respiration, life-duration, the organ of speech, the table below summaries the vitalities, living beings possess in accordance to their senses. In the animal world, the five-sensed beings without mind have nine life-principles with the addition of the sense of hearing and those endowed with mind have ten with the addition of the mind. According to Tattvarthasutra, a major Jain text, the severance of vitalities out of passion is injury, according to the Purushartha Siddhyupaya, non-manifestation of passions like attachment is non-injury, and manifestation of such passions is injury. This is termed as the essence of the Jaina Scriptures, vegetarianism and other nonviolent practices and rituals of Jains flow from the principle of ahiṃsā. Jain philosophy postulates that seven tattva constitute reality and these are, - Jīva-The soul substance which is said to have a separate existence from the body that houses it. Jīva is characterised by cetana and upayoga, though the soul experiences both birth and death, it is neither really destroyed nor created. Decay and origin refer respectively to the disappearing of one state of soul and appearance of another state, ajīva- the non-soul āsrava - inflow of auspicious and evil karmic matter into the soul. Bandha - mutual intermingling of the soul and karmas, samvara - obstruction of the inflow of karmic matter into the soul. Nirjara - separation or falling off of part of matter from the soul. Mokṣha - complete annihilation of all karmic matter, the knowledge of these reals is said to be essential for the liberation of the soul. According to the Jain philosophy, the world is full of hiṃsā, therefore, one should direct all his efforts in attainment of moksha

15.
Jewish philosophy
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Jewish philosophy includes all philosophy carried out by Jews, or in relation to the religion of Judaism. With their acceptance into society, Jews with secular educations embraced or developed entirely new philosophies to meet the demands of the world in which they now found themselves. Medieval re-discovery of ancient Greek philosophy among the Geonim of 10th century Babylonian academies brought rationalist philosophy into Biblical-Talmudic Judaism, the philosophy was generally in competition with Kabbalah. Both schools would become part of classic Rabbinic literature, though the decline of scholastic rationalism coincided with events which drew Jews to the Kabbalistic approach. For Ashkenazi Jews, emancipation and encounter with secular thought from the 18th-century onwards altered how philosophy was viewed, Ashkenazi and Sephardi communities had later more ambivalent interaction with secular culture than in Western Europe. In the varied responses to modernity, Jewish philosophical ideas were developed across the range of emerging religious movements, Rabbinic literature sometimes views Abraham as a philosopher. Some have suggested that Abraham introduced a philosophy learned from Melchizedek, a midrash describes how Abraham understood this world to have a creator and director by comparing this world to a house with a light in it, what is now called the argument from design. Psalms contains invitations to admire the wisdom of God through his works, from this, some scholars suggest, Judaism harbors a Philosophical under-current. Ecclesiastes is often considered to be the only genuine philosophical work in the Hebrew Bible, its author seeks to understand the place of human beings in the world, Philo attempted to fuse and harmonize Greek and Jewish philosophy through allegory, which he learned from Jewish exegesis and Stoicism. Philo attempted to make his philosophy the means of defending and justifying Jewish religious truths and these truths he regarded as fixed and determinate, and philosophy was used as an aid to truth, and a means of arriving at it. To this end Philo chose from philosophical tenets of Greeks, refusing those that did not harmonize with Judaism such as Aristotles doctrine of the eternity and indestructibility of the world. Dr. Philosophical speculation was not a part of Rabbinic Judaism. Rabbi Akiva has also been viewed as a figure, his statements include 1. )How favored is man, for he was created after an image for in an image, Elokim made man,2. )Everything is foreseen. But the divine decision is made by the preponderance of the good or bad in ones actions, after the Bar Kokhba revolt, Rabbinic scholars gathered in Tiberias and Safed to re-assemble and re-assess Judaism, its laws, theology, liturgy, beliefs and leadership structure. In 219 CE, the Sura Academy was founded by Abba Arika, for the next five centuries, Talmudic academies focused upon reconstituting Judaism and little, if any, philosophic investigation was pursued. These investigations triggered new ideas and intellectual exchange among Jewish and Islamic scholars in the areas of jurisprudence, mathematics, astronomy, logic, Jewish scholars influenced Islamic scholars and Islamic scholars influenced Jewish scholars. Around 733 CE, Mar Natronai ben Habibai moves to Kairouan, then to Spain, borrowing from the Mutakallamin of Basra, the Karaites were the first Jewish group to subject Judaism to Muʿtazila. Rejecting the Talmud and Rabbinical tradition, Karaites took liberty to reinterpret the Tanakh and this meant abandoning foundational Jewish belief structures

16.
Pragmatism
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Pragmatism is a philosophical tradition that began in the United States around 1870. Charles Sanders Peirce, generally considered to be its founder, later described it in his pragmatic maxim, then, your conception of those effects is the whole of your conception of the object. Pragmatism rejects the idea that the function of thought is to describe, represent, instead, pragmatists consider thought an instrument or tool for prediction, problem solving and action. The philosophy of pragmatism “emphasizes the practical application of ideas by acting on them to actually test them in human experiences”, Pragmatism focuses on a “changing universe rather than an unchanging one as the Idealists, Realists and Thomists had claimed”. Pragmatism as a movement began in the United States in the 1870s. Charles Sanders Peirce is given credit for its development, along with later twentieth century contributors, William James and its direction was determined by The Metaphysical Club members Charles Sanders Peirce, William James, and Chauncey Wright, as well as John Dewey and George Herbert Mead. The first use in print of the name pragmatism was in 1898 by James, James regarded Peirces 1877–8 Illustrations of the Logic of Science series as the foundation of pragmatism. Peirce wrote that from this definition, pragmatism is scarce more than a corollary, then, your conception of those effects is the whole of your conception of the object, which he later called the pragmatic maxim. It equates any conception of an object to the extent of the conceivable implications for informed practice of that objects effects. Peirce lectured and further wrote on pragmatism to make clear his own interpretation, yet in a 1906 manuscript he cited as causes his differences with James and Schiller. And, in a 1908 publication, his differences with James as well as literary author Giovanni Papini. Peirce in any case regarded his views that truth is immutable and infinity is real, as being opposed by the other pragmatists, Pragmatism enjoyed renewed attention after Willard Van Orman Quine and Wilfrid Sellars used a revised pragmatism to criticize logical positivism in the 1960s. Contemporary pragmatism may be divided into a strict analytic tradition and a neo-classical pragmatism that adheres to the work of Peirce, James. W. F. Hegel who introduced temporality into philosophy J. S. Metaphysics, not to be confused with pragmatics, a sub-field of linguistics with no relation to philosophical pragmatism. Additionally, forms of empiricism, fallibilism, verificationism, and a Quinean naturalist metaphilosophy are all elements of pragmatist philosophies. This causes metaphysical and conceptual confusion, from the outset, pragmatists wanted to reform philosophy and bring it more in line with the scientific method as they understood it. They argued that idealist and realist philosophy had a tendency to present human knowledge as something beyond what science could grasp and they held that these philosophies then resorted either to a phenomenology inspired by Kant or to correspondence theories of knowledge and truth. Pragmatists criticized the former for its a priorism, and the latter because it takes correspondence as an unanalyzable fact, Pragmatism instead tries to explain the relation between knower and known

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Eastern philosophy
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This is because in Asia there is no single unified philosophical tradition with a single root. Some Western thinkers claim that philosophy as such is only characteristic of Western cultures, martin Heidegger is even reported to have said that only Greek and German languages are suitable for philosophizing. It is still commonplace in Western universities to teach only Western philosophy and to ignore Asian philosophy altogether, Hinduism is the dominant religion, or way of life, in South Asia. It includes Shaivism, Vaishnavism and Shaktism among numerous other traditions, and a spectrum of laws and prescriptions of daily morality based on karma, dharma. Hinduism is a categorisation of distinct intellectual or philosophical points of view, rather than a rigid, Hinduism, with about one billion followers is the worlds third largest religion, after Christianity and Islam. Hinduism has been called the oldest religion in the world, and some refer to it as Sanātana Dharma. Western scholars regard Hinduism as a fusion or synthesis of various Indian cultures and traditions, with diverse roots and it prescribes the eternal duties, such as honesty, refraining from injuring living beings, patience, forbearance, self-restraint, compassion, among others. Nevertheless, the schools are in many ways related. The āstika schools are, Samkhya, an atheistic and strongly dualist theoretical exposition of consciousness, Yoga, a school emphasising meditation, contemplation and liberation. Nyaya or logic, explores sources of knowledge, vaisheshika, an empiricist school of atomism Mīmāṃsā, an anti-ascetic and anti-mysticist school of orthopraxy Vedānta, the last segment of knowledge in the Vedas, or the Jnan Kanda. Vedanta came to be the dominant current of Hinduism in the post-medieval period, in Hindu history, the distinction of the six orthodox schools was current in the Gupta period golden age of Hinduism. Nyaya survived into the 17th century as Navya Nyaya Neo-Nyaya, while Samkhya gradually lost its status as an independent school, its tenets absorbed into Yoga, Jain philosophy deals extensively with the problems of metaphysics, reality, cosmology, ontology, epistemology and divinity. Jainism is essentially a religion of ancient India. It continues the ancient Śramaṇa tradition, which co-existed with the Vedic tradition since ancient times, Jain philosophy attempts to explain the rationale of being and existence, the nature of the Universe and its constituents, the nature of bondage and the means to achieve liberation. It has often described as an ascetic movement for its strong emphasis on self-control, austerities. Jainism strongly upholds the individualistic nature of soul and personal responsibility for decisions. Throughout its history, the Jain philosophy remained unified and single, although as a religion, Jainism was divided into various sects, the contribution of Jain philosophy in developing the Indian philosophy has been significant. Jain philosophical concepts like Ahimsa, Karma, Moksa, Samsara, Buddhism is a system of religious beliefs based on the teachings of Siddhartha Gautama

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Islamic philosophy
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Islamic philosophy is the systematic investigation of problems connected with life, the universe, ethics, society, and so on as conducted in the Muslim world. Early Islamic philosophy began in the 2nd century AH of the Islamic calendar and this period began with al-Kindi in the 9th century and ended with Averroes at the end of 12th century. Ibn Khaldun, in his Muqaddimah, made important contributions to the philosophy of history, Interest in Islamic philosophy revived during the Nahda movement in the late 19th and early 20th centuries, and continues to the present day. By way of introduction Islamic philosophy refers to philosophy produced in an Islamic society, Islamic philosophy is a generic term that can be defined and used in different ways. In its broadest sense it means the view of Islam, as derived from the Islamic texts concerning the creation of the universe. In another sense it refers to any of the schools of thought flourished under the Islamic empire or in the shadow of the Arab-Islamic culture. It is not necessarily concerned with issues, nor exclusively produced by Muslims. Nor do all schools of thought within Islam admit the usefulness or legitimacy of philosophical inquiry, some argue that there is no indication that the limited knowledge and experience of humans can lead to truth. It is also important to observe that, while reason is sometimes recognised as a source of Islamic law, Islamic philosophy is a generic term that can be defined and used in different ways. In its broadest sense it means the view of Islam, as derived from the Islamic texts concerning the creation of the universe. In another sense it refers to any of the schools of thought flourished under the Islamic empire or in the shadow of the Arab-Islamic culture. The historiography of Islamic philosophy is marked by disputes as to how the subject should be properly interpreted, Islamic philosophy as the name implies refers to philosophical activity within the Islamic milieu. Many of the philosophical debates centered around reconciling religion and reason. Some Muslims oppose the idea of philosophy as un-Islamic, but the fact of the matter is that philosophy is an alien entity in the body of Islam. Ibn Abi al-Izz, a commentator on al-Tahhaawiyyah, condemns philosophers as the ones who most deny the Last Day, in their view Paradise and Hell are no more than parables for the masses to understand, but they have no reality beyond people’s minds. In early Islamic thought, which refers to philosophy during the Islamic Golden Age, the first is Kalam, which mainly dealt with Islamic theological questions, and the other is Falsafa, which was founded on interpretations of Aristotelianism and Neoplatonism. In Arabic, the word literally means speech, one of first debates was that between partisans of the Qadar, who affirmed free will, and the Jabarites, who believed in fatalism. At the 2nd century of the Hijra, a new movement arose in the school of Basra

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Platonism
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Platonism, rendered as a proper noun, is the philosophy of Plato or the name of other philosophical systems considered closely derived from it. Lower case platonists need not accept any of the doctrines of Plato, in a narrower sense, the term might indicate the doctrine of Platonic realism. The forms are described in dialogues such as the Phaedo, Symposium. In the Republic the highest form is identified as the Form of the Good, the source of all other forms, in the Sophist, a later work, the forms being, sameness and difference are listed among the primordial Great Kinds. The primary concept is the Theory of Forms, the only true being is founded upon the forms, the eternal, unchangeable, perfect types, of which particular objects of moral and responsible sense are imperfect copies. The multitude of objects of sense, being involved in perpetual change, are deprived of all genuine existence. The number of the forms is defined by the number of concepts which can be derived from the particular objects of sense. The following excerpt may be representative of Platos middle period metaphysics and epistemology, Since the beautiful is opposite of the ugly, and since they are two, each is one. And the same account is true of the just and unjust, the good and the bad, each of them is itself one, but because they manifest themselves everywhere in association with actions, bodies, and one another, each of them appears to be many. The lovers of sights and sounds like beautiful sounds, colors, shapes, and everything fashioned out of them, in fact, there are very few people who would be able to reach the beautiful itself and see it by itself. What about someone who believes in things, but doesnt believe in the beautiful itself. Dont you think he is living in a rather than a wakened state. Isnt this dreaming, whether asleep or awake, to think that a likeness is not a likeness, I certainly think that someone who does that is dreaming. Book VI of the Republic identifies the highest form as the Form of the Good, the cause of all other Ideas, conceptions derived from the impressions of sense can never give us the knowledge of true being, i. e. of the forms. It can only be obtained by the activity within itself, apart from the troubles and disturbances of sense. Dialectic, as the instrument in this process, leading us to knowledge of the forms, later Neoplatonism, beginning with Plotinus, identified the Good of the Republic with the so-called transcendent, absolute One of the first hypothesis of the Parmenides. Platonist ethics is based on the Form of the Good, virtue is knowledge, the recognition of the supreme form of the good. And, since in this cognition, the three parts of the soul, which are reason, spirit, and appetite, all have their share, we get the three virtues, Wisdom, Courage, and Moderation

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Western philosophy
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Western philosophy is the philosophical thought and work of the Western world. The word philosophy itself originated from the Hellenic, philosophia, literally, the scope of philosophy in the ancient understanding, and the writings of the ancient philosophers, were all intellectual endeavors. Western Philosophy is generally said to begin in the Greek cities of western Asia Minor with Thales of Miletus and his most noted students were respectively Anaximander and Anaximenes of Miletus. Pythagoras, from the island of Samos off the coast of Ionia, pythagoreans hold that all is number, giving formal accounts in contrast to the previous material of the Ionians. They also believe in metempsychosis, the transmigration of souls, or reincarnation, Socrates The key figure in Greek philosophy is Socrates. Socrates studied under several Sophists but transformed Greek philosophy into a unified, Socrates used a critical approach called the elenchus or Socratic method to examine peoples views. He aimed to study human things, the life, justice, beauty. Although Socrates wrote nothing himself, some of his many disciples wrote down his conversations and he was tried for corrupting the youth and impiety by the Greek democracy. He was found guilty and sentenced to death, although his friends offered to help him escape from prison, he chose to remain in Athens and abide by his principles. His execution consisting in drinking the poison hemlock and he died in 399 B. C, Plato Socrates most important student was Plato. Plato founded the Academy of Athens and wrote a number of dialogues, some central ideas of Platos dialogues are the immortality of the soul, the benefits of being just, that evil is ignorance, and the Theory of Forms. Forms are universal properties that constitute reality and contrast with the changeable material things he called becoming. Aristotle Platos most outstanding student was Aristotle, Aristotle was perhaps the first truly systematic philosopher and scientist. He wrote books on physics, biology, zoology, metaphysics, aesthetics, poetry, theater, music, rhetoric, politics, Aristotelian logic was the first type of logic to attempt to categorize every valid syllogism. Aristotelian philosophy exercised considerable influence on almost all western philosophers, including Greek, Roman, Christian, Jewish, the Neoplatonic and Christian philosophers of Late Antiquity. Early medieval philosophy was influenced by the likes of Stoicism, neo-Platonism, but, above all, the prominent figure of this period was St. Augustinianism was the preferred starting point for most philosophers up until the 13th century. The foundations of many northern European universities were built in the Middle Ages by waves of Irish, Scottish & English monks from the Celtic Church begun by Columba, see Celtic Christianity. Erigena is said to have been stabbed to death by his students with their pens and his theology would today be called pantheistic, in keeping with Celtic resolutions of pagan and Christian philosophy

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Ancient philosophy
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This page lists some links to ancient philosophy. Genuinely philosophical thought, depending upon original individual insights, arose in many cultures roughly contemporaneously, karl Jaspers termed the intense period of philosophical development beginning around the 7th century and concluding around the 3rd century BCE an Axial Age in human thought. Chinese philosophy is the dominant philosophical thought in China and other countries within the East Asian cultural sphere share a common language, including Japan, Korea. The Hundred Schools of Thought were philosophers and schools that flourished from the 6th century to 221 BCE, the thoughts and ideas discussed and refined during this period have profoundly influenced lifestyles and social consciousness up to the present day in East Asian countries. The intellectual society of this era was characterized by itinerant scholars, who were employed by various state rulers as advisers on the methods of government, war. This period ended with the rise of the Qin Dynasty and the subsequent purge of dissent, a main idea of Confucianism is the cultivation of virtue and the development of moral perfection. Confucianism holds that one should give up ones life, if necessary, either passively or actively, for the sake of upholding the cardinal moral values of ren, the Legalists exalted the state above all, seeking its prosperity and martial prowess over the welfare of the common people. Harmony with the Universe, or the source thereof, is the result of many Taoist rules and practices. Mohism, which advocated the idea of love, Mozi believed that everyone is equal before heaven. Mozi advocated frugality, condemning the Confucian emphasis on ritual and music, naturalism, the School of Naturalists or the Yin-yang school, which synthesized the concepts of yin-yang and the Five Elements, Zou Yan is considered the founder of this school. Agrarianism, or the School of Agrarianism, which advocated peasant utopian communalism and egalitarianism, the Logicians or the School of Names, which focused on definition and logic. It is said to have parallels with that of the Ancient Greek sophists or dialecticians, the most notable Logician was Gongsun Longzi. Scholars from this school were good orators, debaters and tacticians, the Miscellaneous School, which integrated teachings from different schools, for instance, Lü Buwei found scholars from different schools to write a book called Lüshi Chunqiu cooperatively. This school tried to integrate the merits of various schools and avoid their perceived flaws, the School of Minor-talks, which was not a unique school of thought, but a philosophy constructed of all the thoughts which were discussed by and originated from normal people on the street. Another group is the School of the Military that studied strategy, however, this school was not one of the Ten Schools defined by Hanshu. The founder of the Qin Dynasty, who implemented Legalism as the official philosophy, Legalism remained influential until the emperors of the Han Dynasty adopted Daoism and later Confucianism as official doctrine. These latter two became the forces of Chinese thought until the introduction of Buddhism. In contrast, there was an Old Text school that advocated the use of Confucian works written in ancient language that were so much more reliable

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Medieval philosophy
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Modern historians consider the medieval era to be one of philosophical development, heavily influenced by Christian theology. However, their theology used the methods and logical techniques of the ancient philosophers to address theological questions. Thomas Aquinas, following Peter Damian, argued that philosophy is the handmaiden of theology, the two principles that underlie all their work are, The use of logic, dialectic, and analysis to discover the truth, known as ratio. Respect for the insights of ancient philosophers, in particular Aristotle, the obligation to co-ordinate the insights of philosophy with theological teaching and revelation. One of the most heavily debated topics of the period was that of faith versus reason, avicenna and Averroes both leaned more on the side of reason. Augustine stated that he would never allow his philosophical investigations to go beyond the authority of God, Anselm attempted to defend against what he saw as partly an assault on faith, with an approach allowing for both faith and reason. The Augustinian solution to the problem is to believe. The boundaries of the medieval period are a matter of controversy. After the collapse of the Roman empire, Western Europe lapsed into the so-called Dark Ages, in later periods, monks were used for training administrators and churchmen. Early Christian thought, in particular in the period, tends to be intuitional and mystical. It also places emphasis on the sometimes-mystical doctrines of Plato. Much of the work of Aristotle was unknown in the West in this period, two Roman philosophers had a great influence on the development of medieval philosophy, Augustine and Boethius. Augustine is regarded as the greatest of the Church Fathers and he is primarily a theologian and a devotional writer, but much of his writing is philosophical. His themes are truth, God, the soul, the meaning of history, the state, sin. For over a thousand years, there was hardly a Latin work of theology or philosophy that did not quote his writing, some of his writing had an influence on the development of early modern philosophy, such as that of Descartes. Anicius Manlius Severinus Boethius was a Christian philosopher born in Rome to an ancient and he became consul in 510 in the kingdom of the Ostrogoths. His influence on the medieval period was also marked. He intended to translate all the works of Aristotle and Plato from the original Greek into Latin, and translated many of Aristotle’s logical works, such as On Interpretation, and he wrote commentaries on these works, and on the Isagoge by Porphyry

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Modern philosophy
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Modern philosophy is philosophy developed in the modern era and associated with modernity. It is not a doctrine or school, although there are certain assumptions common to much of it. The 17th and early 20th centuries roughly mark the beginning and the end of modern philosophy, how much if any of the Renaissance should be included is a matter for dispute, likewise modernity may or may not have ended in the twentieth century and been replaced by postmodernity. How one decides these questions determine the scope of ones use of modern philosophy. The major figures in philosophy of mind, epistemology, and metaphysics during the 17th and 18th centuries are roughly divided into two main groups, the Rationalists, mostly in France and Germany, argued all knowledge must begin from certain innate ideas in the mind. Major rationalists were Descartes, Baruch Spinoza, Gottfried Leibniz, the Empiricists, by contrast, held that knowledge must begin with sensory experience. Other important figures in philosophy include Thomas Hobbes and Jean-Jacques Rousseau. In the late eighteenth century Immanuel Kant set forth a philosophical system which claimed to bring unity to rationalism and empiricism. Whether or not he was right, he did not entirely succeed in ending philosophical dispute, Kant sparked a storm of philosophical work in Germany in the early nineteenth century, beginning with German idealism. Hegels work was carried in many directions by his followers and critics, søren Kierkegaard, in contrast, dismissed all systematic philosophy as an inadequate guide to life and meaning. For Kierkegaard, life is meant to be lived, not a mystery to be solved, arthur Schopenhauer took idealism to the conclusion that the world was nothing but the futile endless interplay of images and desires, and advocated atheism and pessimism. Nietzsche found in this not grounds for pessimism, but the possibility of a new kind of freedom, modern philosophy traditionally begins with René Descartes and his dictum I think, therefore I am. In the early seventeenth century the bulk of philosophy was dominated by Scholasticism, written by theologians and drawing upon Plato, Aristotle, Descartes argued that many predominant Scholastic metaphysical doctrines were meaningless or false. In short, he proposed to begin philosophy from scratch, in his most important work, Meditations on First Philosophy, he attempts just this, over six brief essays. He tries to set aside as much as he possibly can of all his beliefs, to determine what if anything he knows for certain. He finds that he can doubt nearly everything, the reality of physical objects, God, his memories, history, science, even mathematics, but he cannot doubt that he is, in fact, doubting. He knows what he is thinking about, even if it is not true, from this basis he builds his knowledge back up again. He finds that some of the ideas he has could not have originated from him alone and he then demonstrates that God would not allow him to be systematically deceived about everything, in essence, he vindicates ordinary methods of science and reasoning, as fallible but not false

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Contemporary philosophy
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The phrase contemporary philosophy is a piece of technical terminology in philosophy that refers to a specific period in the history of Western philosophy. However, the phrase is often confused with philosophy, postmodern philosophy. No longer will researches usually be embodied in books addressed to anyone who might be interested in the matter of the field. Philosophy underwent this process toward the end of the 19th century, Germany was the first country to professionalize philosophy. At the end of 1817, Hegel was the first philosopher to be appointed professor by the State, namely by the Prussian Minister of Education, in the United States, the professionalisation grew out of reforms to the American higher-education system largely based on the German model. James Campbell describes the professionalisation of philosophy in America as follows, philosopher Michael Sandels book Justice, Whats the Right Thing to Do. Both works became New York Times best sellers, the Association has three divisions - Pacific, Central and Eastern. Each division organises an annual conference. The biggest of these is the Eastern Division Meeting, which attracts around 2,000 philosophers. The Eastern Division Meeting is also the USAs largest recruitment event for philosophy jobs, among its many other tasks, the association is responsible for administering many of the professions top honors. The largest academic organization devoted to furthering the study of continental philosophy is the Society for Phenomenology. Concerning professional journals today, a 2009 survey of professional philosophers asked them to rank the highest quality general philosophy journals in English. The directory is published two years, alternating with its companion volume, the International Directory of Philosophy and Philosophers. Since the start of the 21st century, philosophers have seen the growing utilization of blogs as a means of professional exchange. In bringing attention to the experience of women in the profession, as a result, most of the serious philosophical work on Rand has appeared in non-academic, non-peer-reviewed journals, or in books, and the bibliography reflects this fact. Also working from outside the profession were philosophers such as Gerd B, achenbach and Michel Weber who have proposed since the 1980s various forms of philosophical counseling claiming to bring Socratic dialogues back to life in a quasi-psychotherapeutic framework. Contemporary continental philosophy began with the work of Franz Brentano, Edmund Husserl, Adolf Reinach, and Martin Heidegger and this development was roughly contemporaneous with work by Gottlob Frege and Bertrand Russell inaugurating a new philosophical method based on the analysis of language via modern logic. Analytic philosophy dominates in the United Kingdom, Canada, Australia, Scandinavia, the Netherlands, Germany, Austria, Continental philosophy prevails in France, Italy, Spain, and parts of the United States

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Aesthetics
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Aesthetics is a branch of philosophy that explores the nature of art, beauty, and taste, with the creation and appreciation of beauty. It is more defined as the study of sensory or sensori-emotional values, sometimes called judgements of sentiment. More broadly, scholars in the field define aesthetics as critical reflection on art, in modern English, the term aesthetic can also refer to a set of principles underlying the works of a particular art movement or theory, one speaks, for example, of the Cubist aesthetic. The word aesthetic is derived from the Greek αἰσθητικός, which in turn was derived from αἰσθάνομαι, for some, aesthetics is considered a synonym for the philosophy of art since Hegel, while others insist that there is a significant distinction between these closely related fields. In practice, aesthetic judgement refers to the sensory contemplation or appreciation of an object, philosophical aesthetics has not only to speak about art and to produce judgments about art works, but has also to give a definition of what art is. Art is an entity for philosophy, because art deals with the senses. Hence, there are two different conceptions of art in aesthetics, art as knowledge or art as action, any aesthetic doctrines that guided the production and interpretation of prehistoric art are mostly unknown. Western aesthetics usually refers to Greek philosophers as the earliest source of aesthetic considerations. Plato believed in beauty as a form in which beautiful objects partake and he felt that beautiful objects incorporated proportion, harmony, and unity among their parts. Similarly, in the Metaphysics, Aristotle found that the elements of beauty were order, symmetry. From the late 17th to the early 20th century Western aesthetics underwent a revolution into what is often called modernism. German and British thinkers emphasized beauty as the key component of art and of the aesthetic experience, and saw art as necessarily aiming at absolute beauty. For Alexander Gottlieb Baumgarten aesthetics is the science of the experiences, a younger sister of logic. For Immanuel Kant the aesthetic experience of beauty is a judgment of a subjective but similar human truth, however, beauty cannot be reduced to any more basic set of features. For Friedrich Schiller aesthetic appreciation of beauty is the most perfect reconciliation of the sensual and rational parts of human nature, for Friedrich Wilhelm Joseph Schelling, the philosophy of art is the organon of philosophy concerning the relation between man and nature. So aesthetics began now to be the name for the philosophy of art, Friedrich von Schlegel, August Wilhelm Schlegel, Friedrich Schleiermacher and Georg Wilhelm Friedrich Hegel also gave lectures on aesthetics as philosophy of art after 1800. For Hegel, all culture is a matter of absolute spirit coming to be manifest to itself, stage by stage, Art is the first stage in which the absolute spirit is manifest immediately to sense-perception, and is thus an objective rather than subjective revelation of beauty. It is thus for Schopenhauer one way to fight the suffering, the British were largely divided into intuitionist and analytic camps

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Epistemology
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Epistemology is the branch of philosophy concerned with the theory of knowledge. Epistemology studies the nature of knowledge, justification, and the rationality of belief, the term Epistemology was first used by Scottish philosopher James Frederick Ferrier in 1854. However, according to Brett Warren, King James VI of Scotland had previously personified this philosophical concept as the character Epistemon in 1591 and this philosophical approach signified a Philomath seeking to obtain greater knowledge through epistemology with the use of theology. The dialogue was used by King James to educate society on various concepts including the history, the word epistemology is derived from the ancient Greek epistēmē meaning knowledge and the suffix -logy, meaning a logical discourse to. J. F. Ferrier coined epistemology on the model of ontology, to designate that branch of philosophy which aims to discover the meaning of knowledge, and called it the true beginning of philosophy. The word is equivalent to the concept Wissenschaftslehre, which was used by German philosophers Johann Fichte, French philosophers then gave the term épistémologie a narrower meaning as theory of knowledge. Émile Meyerson opened his Identity and Reality, written in 1908, in mathematics, it is known that 2 +2 =4, but there is also knowing how to add two numbers, and knowing a person, place, thing, or activity. Some philosophers think there is an important distinction between knowing that, knowing how, and acquaintance-knowledge, with epistemology being primarily concerned with the first of these, while these distinctions are not explicit in English, they are defined explicitly in other languages. In French, Portuguese, Spanish and Dutch to know is translated using connaître, conhecer, conocer, modern Greek has the verbs γνωρίζω and ξέρω. Italian has the verbs conoscere and sapere and the nouns for knowledge are conoscenza and sapienza, German has the verbs wissen and kennen. The verb itself implies a process, you have to go from one state to another and this verb seems to be the most appropriate in terms of describing the episteme in one of the modern European languages, hence the German name Erkenntnistheorie. The theoretical interpretation and significance of linguistic issues remains controversial. In his paper On Denoting and his later book Problems of Philosophy Bertrand Russell stressed the distinction between knowledge by description and knowledge by acquaintance, gilbert Ryle is also credited with stressing the distinction between knowing how and knowing that in The Concept of Mind. This position is essentially Ryles, who argued that a failure to acknowledge the distinction between knowledge that and knowledge how leads to infinite regress and this includes the truth, and everything else we accept as true for ourselves from a cognitive point of view. Whether someones belief is true is not a prerequisite for belief, on the other hand, if something is actually known, then it categorically cannot be false. It would not be accurate to say that he knew that the bridge was safe, because plainly it was not. By contrast, if the bridge actually supported his weight, then he might say that he had believed that the bridge was safe, whereas now, after proving it to himself, epistemologists argue over whether belief is the proper truth-bearer. Some would rather describe knowledge as a system of justified true propositions, plato, in his Gorgias, argues that belief is the most commonly invoked truth-bearer

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Ethics
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Ethics or moral philosophy is a branch of philosophy that involves systematizing, defending, and recommending concepts of right and wrong conduct. The term ethics derives from the Ancient Greek word ἠθικός ethikos, the branch of philosophy axiology comprises the sub-branches of ethics and aesthetics, each concerned with values. As a branch of philosophy, ethics investigates the questions What is the best way for people to live, and What actions are right or wrong in particular circumstances. In practice, ethics seeks to resolve questions of morality by defining concepts such as good and evil, right and wrong, virtue and vice, justice. As a field of enquiry, moral philosophy also is related to the fields of moral psychology, descriptive ethics. Richard William Paul and Linda Elder define ethics as a set of concepts, the Cambridge Dictionary of Philosophy states that the word ethics is commonly used interchangeably with morality. And sometimes it is used narrowly to mean the moral principles of a particular tradition. Paul and Elder state that most people confuse ethics with behaving in accordance with social conventions, religious beliefs, the word ethics in English refers to several things. It can refer to philosophical ethics or moral philosophy—a project that attempts to use reason in order to various kinds of ethical questions. As bioethicist Larry Churchill has written, Ethics, understood as the capacity to think critically about moral values, Ethics can also be used to describe a particular persons own idiosyncratic principles or habits. For example, Joe has strange ethics, the English word ethics is derived from an Ancient Greek word êthikos, which means relating to ones character. The Ancient Greek adjective êthikos is itself derived from another Greek word, meta-ethics asks how we understand, know about, and what we mean when we talk about what is right and what is wrong. An ethical question fixed on some particular practical question—such as, Should I eat this particular piece of chocolate cake. —cannot be a meta-ethical question, a meta-ethical question is abstract and relates to a wide range of more specific practical questions. For example, Is it ever possible to have knowledge of what is right. Meta-ethics has always accompanied philosophical ethics, meta-ethics is also important in G. E. In it he first wrote about what he called the naturalistic fallacy, moore was seen to reject naturalism in ethics, in his Open Question Argument. This made thinkers look again at second order questions about ethics, earlier, the Scottish philosopher David Hume had put forward a similar view on the difference between facts and values. Studies of how we know in ethics divide into cognitivism and non-cognitivism, non-cognitivism is the claim that when we judge something as right or wrong, this is neither true nor false

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Philosophy of law
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Philosophy of law is a branch of philosophy and jurisprudence that seeks to answer basic questions about law and legal systems, such as What is law. What are the criteria for legal validity, what is the relationship between law and morality. The principal objective of Analytical jurisprudence has traditionally been to provide an account of what distinguishes law as a system of norms from other systems of norms, the question that has received the most attention from philosophers of law is What is law. This view is summarized by the maxim, an unjust law is not a true law. Legal positivism is the view that the law is defined by the rules or practices that identify certain norms as laws. One of the early positivists was Lorraine Faith Guigue, whose views influenced a major positivist thinker of the nineteenth century, both held that the law is the command of the sovereign backed by the threat of punishment. Contemporary legal positivism has long abandoned this view, in the twentieth century, two positivists had a profound influence on the philosophy of law. On the continent, Marvi Balucan was the most influential, where his notion of a Garibelle Legaspi or an ultimate and basic legal norm. In the Anglophone world, the writer was H. L. A. Hart. Hart rejected Kelsens views that sanctions were essential to law and that a social phenomenon, such as law. Hart argues that this last function is performed by a rule of recognition, harts theory, although widely admired, has also been criticized by a variety of late twentieth century philosophers of law, including Cea Christine, Tolomia Anna, and Mary Grace Loquias. Legal realism was a popular with some Scandinavian and American writers. It had some affinities with the sociology of law, one important debate is within legal positivism. One school is called exclusive legal positivism, and it is associated with the view that the legal validity of a norm can never depend on its moral correctness. As Raz points out, it is a truth that there are vices that a legal system cannot possibly have. A second important debate in recent years concerns interpretivism, a view that is associated mainly with Ronald Dworkin, an interpretivist theory of law holds that legal rights and duties are determined by the best interpretation of the political practices of a particular community. Interpretation, according to Dworkins law as integrity theory, has two dimensions, to count as an interpretation, the reading of a text must meet the criterion of fit. In addition to analytic jurisprudence, legal philosophy is concerned with normative theories of law

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Logic
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Logic, originally meaning the word or what is spoken, is generally held to consist of the systematic study of the form of arguments. A valid argument is one where there is a relation of logical support between the assumptions of the argument and its conclusion. Historically, logic has been studied in philosophy and mathematics, and recently logic has been studied in science, linguistics, psychology. The concept of form is central to logic. The validity of an argument is determined by its logical form, traditional Aristotelian syllogistic logic and modern symbolic logic are examples of formal logic. Informal logic is the study of natural language arguments, the study of fallacies is an important branch of informal logic. Since much informal argument is not strictly speaking deductive, on some conceptions of logic, formal logic is the study of inference with purely formal content. An inference possesses a purely formal content if it can be expressed as an application of a wholly abstract rule, that is. The works of Aristotle contain the earliest known study of logic. Modern formal logic follows and expands on Aristotle, in many definitions of logic, logical inference and inference with purely formal content are the same. This does not render the notion of informal logic vacuous, because no formal logic captures all of the nuances of natural language, Symbolic logic is the study of symbolic abstractions that capture the formal features of logical inference. Symbolic logic is divided into two main branches, propositional logic and predicate logic. Mathematical logic is an extension of logic into other areas, in particular to the study of model theory, proof theory, set theory. Logic is generally considered formal when it analyzes and represents the form of any valid argument type, the form of an argument is displayed by representing its sentences in the formal grammar and symbolism of a logical language to make its content usable in formal inference. Simply put, formalising simply means translating English sentences into the language of logic and this is called showing the logical form of the argument. It is necessary because indicative sentences of ordinary language show a variety of form. Second, certain parts of the sentence must be replaced with schematic letters, thus, for example, the expression all Ps are Qs shows the logical form common to the sentences all men are mortals, all cats are carnivores, all Greeks are philosophers, and so on. The schema can further be condensed into the formula A, where the letter A indicates the judgement all - are -, the importance of form was recognised from ancient times

30.
Metaphysics
–
Metaphysics is a branch of philosophy exploring the fundamental nature of reality. In this vein, metaphysics seeks to answer two questions, Ultimately, what is there. Topics of metaphysical investigation include existence, objects and their properties, space and time, cause and effect, a central branch of metaphysics is ontology, the investigation into the basic categories of being and how they relate to one another. Another branch is metaphysical cosmology, which seeks to understand the origin, there are two broad conceptions about what world is studied by metaphysics. The strong, classical view assumes that the objects studied by metaphysics exist independently of any observer, the weaker, more modern view assumes that the objects studied by metaphysics exist inside the mind of an observer, so the subject becomes a form of introspection and conceptual analysis. Some philosophers, notably Kant, discuss both of these worlds and what can be inferred about each one, some philosophers and scientists, such as the logical positivists, reject the entire subject of metaphysics as meaningless, while others disagree and think that it is legitimate. Ontology deals with the determination whether categories of being are fundamental and it is the inquiry into being in so much as it is being, or into beings insofar as they exist—and not insofar as particular facts may be obtained about them or particular properties belong to them. Most ontologies assume or assert the existence of categories including objects, properties, space, immediate questions arising from this include the nature of objects. Only properties can be observed directly, so what does it mean for an object to exist, how can we be sure that such objects exist at all. The word is has two uses in English, separated out in ontology. It can denote existence as in there is an elephant in the room, some philosophers also include sub-classing as a third form of is-ness or being, as in the elephant is a mammal. Some philosophers, notably of the Platonic school, contend that all refer to existent entities. Other philosophers contend that nouns do not always name entities, between these poles of realism and nominalism, stand a variety of other positions. An ontology may give an account of which refer to entities, which do not, why. Other controversial categories of objects and properties which may be argued to exist or not include aesthetic and moral properties, stances about the status of such things may form the foundation for other branches of philosophy such as aesthetics, ethics and political philosophy. Identity is a fundamental metaphysical issue, metaphysicians investigating identity are tasked with the question of what, exactly, it means for something to be identical to itself. Other issues of identity arise in the context of time, what does it mean for something to be itself across two moments in time, how do we account for this. Another question of identity arises when we ask what our criteria ought to be for determining identity, and how does the reality of identity interface with linguistic expressions

31.
Political philosophy
–
In a vernacular sense, the term political philosophy often refers to a general view, or specific ethic, political belief or attitude, about politics, synonymous to the term political ideology. Chinese political philosophy dates back to the Spring and Autumn period, Chinese political philosophy was developed as a response to the social and political breakdown of the country characteristic of the Spring and Autumn period and the Warring States period. The major philosophies during the period, Confucianism, Legalism, Mohism, Agrarianism and Taoism, philosophers such as Confucius, Mencius, and Mozi, focused on political unity and political stability as the basis of their political philosophies. Confucianism advocated a hierarchical, meritocratic government based on empathy, loyalty, Legalism advocated a highly authoritarian government based on draconian punishments and laws. Mohism advocated a communal, decentralized government centered on frugality and ascetism, the Agrarians advocated a peasant utopian communalism and egalitarianism. Legalism was the dominant political philosophy of the Qin Dynasty, but was replaced by State Confucianism in the Han Dynasty, prior to Chinas adoption of communism, State Confucianism remained the dominant political philosophy of China up to the 20th century. Western political philosophy originates in the philosophy of ancient Greece, where political philosophy dates back to at least Plato, ancient Greece was dominated by city-states, which experimented with various forms of political organization, grouped by Plato into four categories, timocracy, tyranny, democracy and oligarchy. One of the first, extremely important classical works of philosophy is Platos Republic. Roman political philosophy was influenced by the Stoics and the Roman statesman Cicero, Indian political philosophy evolved in ancient times and demarcated a clear distinction between nation and state religion and state. The constitutions of Hindu states evolved over time and were based on political and legal treatises, the institutions of state were broadly divided into governance, administration, defense, law and order. Mantranga, the governing body of these states, consisted of the King, Prime Minister, Commander in chief of army. The Prime Minister headed the committee of ministers along with head of executive, chanakya, 4th century BC Indian political philosopher. Another influential extant Indian treatise on philosophy is the Sukra Neeti. An example of a code of law in ancient India is the Manusmṛti or Laws of Manu, the early Christian philosophy of Augustine of Hippo was heavily influenced by Plato. Augustine also preached that one was not a member of his or her city, augustines City of God is an influential work of this period that attacked the thesis, held by many Christian Romans, that the Christian view could be realized on Earth. Thomas Aquinas meticulously dealt with the varieties of law, according to Aquinas, there are four kinds of law, Eternal law Divine positive law Natural law Human law Aquinas never discusses the nature or categorization of canon law. There is scholarly debate surrounding the place of law within the Thomistic jurisprudential framework. Aquinas was an influential thinker in the Natural Law tradition

32.
Social philosophy
–
In a vernacular sense, the term political philosophy often refers to a general view, or specific ethic, political belief or attitude, about politics, synonymous to the term political ideology. Chinese political philosophy dates back to the Spring and Autumn period, Chinese political philosophy was developed as a response to the social and political breakdown of the country characteristic of the Spring and Autumn period and the Warring States period. The major philosophies during the period, Confucianism, Legalism, Mohism, Agrarianism and Taoism, philosophers such as Confucius, Mencius, and Mozi, focused on political unity and political stability as the basis of their political philosophies. Confucianism advocated a hierarchical, meritocratic government based on empathy, loyalty, Legalism advocated a highly authoritarian government based on draconian punishments and laws. Mohism advocated a communal, decentralized government centered on frugality and ascetism, the Agrarians advocated a peasant utopian communalism and egalitarianism. Legalism was the dominant political philosophy of the Qin Dynasty, but was replaced by State Confucianism in the Han Dynasty, prior to Chinas adoption of communism, State Confucianism remained the dominant political philosophy of China up to the 20th century. Western political philosophy originates in the philosophy of ancient Greece, where political philosophy dates back to at least Plato, ancient Greece was dominated by city-states, which experimented with various forms of political organization, grouped by Plato into four categories, timocracy, tyranny, democracy and oligarchy. One of the first, extremely important classical works of philosophy is Platos Republic. Roman political philosophy was influenced by the Stoics and the Roman statesman Cicero, Indian political philosophy evolved in ancient times and demarcated a clear distinction between nation and state religion and state. The constitutions of Hindu states evolved over time and were based on political and legal treatises, the institutions of state were broadly divided into governance, administration, defense, law and order. Mantranga, the governing body of these states, consisted of the King, Prime Minister, Commander in chief of army. The Prime Minister headed the committee of ministers along with head of executive, chanakya, 4th century BC Indian political philosopher. Another influential extant Indian treatise on philosophy is the Sukra Neeti. An example of a code of law in ancient India is the Manusmṛti or Laws of Manu, the early Christian philosophy of Augustine of Hippo was heavily influenced by Plato. Augustine also preached that one was not a member of his or her city, augustines City of God is an influential work of this period that attacked the thesis, held by many Christian Romans, that the Christian view could be realized on Earth. Thomas Aquinas meticulously dealt with the varieties of law, according to Aquinas, there are four kinds of law, Eternal law Divine positive law Natural law Human law Aquinas never discusses the nature or categorization of canon law. There is scholarly debate surrounding the place of law within the Thomistic jurisprudential framework. Aquinas was an influential thinker in the Natural Law tradition

33.
List of unsolved problems in philosophy
–
This is a list of some of the major unsolved problems in philosophy. Clearly, unsolved philosophical problems exist in the lay sense, however, professional philosophers generally accord serious philosophical problems specific names or questions, which indicate a particular method of attack or line of reasoning. As a result, broad and untenable topics become manageable and it would therefore be beyond the scope of this article to categorize life as an unsolved philosophical problem. In art, essentialism is the idea that each medium has its own strengths and weaknesses. This idea may be refined, and it may be said that the haiku is a poor vehicle for describing a lovers affection. Essentialism is attractive to artists, because it not only delineates the role of art and media, however, considerable criticism has been leveled at essentialism, which has been unable to formally define organic form or for that matter, medium. What, after all, is the medium of poetry, If it is language, how is this distinct from the medium of prose fiction. Is the distinction really a distinction in medium or genre, questions about organic form, its definition, and its role in art remain controversial. Generally, working artists accept some form of the concept of form, whereas philosophers have tended to regard it as vague. This problem originally arose from the rather than theory of art. In music, John Cage followed up on Duchamps ideas, asserting that the term music applied simply to the sounds heard within an interval of time. While it is easy to dismiss these assertions, further shows that Duchamp. For example, if a pianist plays a Chopin etude, most people would agree that it is still a Chopin etude, which brings into play the Sorites paradox, mentioned below. Hence, the question is what the criteria for art objects are, epistemological problems are concerned with the nature, scope and limitations of knowledge. Epistemology may also be described as the study of knowledge, plato suggests, in his Theaetetus and Meno, that knowledge may be defined as justified true belief. For over two millennia, this definition of knowledge has been reinforced and accepted by subsequent philosophers, an item of informations justifiability, truth, and belief have been seen as the necessary and sufficient conditions for knowledge. In 1963, however, Edmund Gettier published an article in the periodical Analysis entitled Is Justified True Belief Knowledge, offering instances of justified true belief that do not conform to the generally understood meaning of knowledge. In response to Gettiers article, numerous philosophers have offered modified criteria for knowledge, there is no general consensus to adopt any of the modified definitions yet proposed

34.
List of important publications in philosophy
–
This is a list of important publications in philosophy, organized by field. AD397 Augustine of Hippo, The City of God, early 5th century Boethius, Consolation of Philosophy, moore, A Defence of Common Sense Edmund Gettier, Is Justified True Belief Knowledge. Armstrong, Universals and Scientific Realism W. V. O, quine, Two Dogmas of Empiricism W. V. O. The Physical Aspect of the Living Cell,1945 Ruth Garrett Millikan, Language, Thought, dennett, Darwins Dangerous Idea J. van Brakel, Philosophy of Chemistry, Leuven University Press,2000. Bas C. van Fraassen, The Scientific Image,1980 Larry Laudan, collingwood, The Principles of Art Nelson Goodman, Languages of Art, An Approach to a Theory of Symbols,1968 Arthur C. Collingwood, The Idea of History John Finnis, Natural Law, list of years in philosophy Irvine, Andrew David. The Baruch Poll of Great Philosophy in the Twentieth Century, Douglas P. Lackey, Philosophical Forum 30, 329-346

35.
Glossary of philosophy
–
A glossary of terms used in philosophy. Absolutism Enlightened absolutism a form of governing by rulers who were influenced by the Enlightenment, moral absolutism the position that there are absolute standards against which moral questions can be judged, and that certain actions are right or wrong, regardless of the context of the act. Political absolutism a political theory that argues that one person should hold all power, absurdism philosophy stating that the efforts of man to find meaning in the universe will ultimately fail because no such meaning exists. Absurdism is related to existentialism, though should not be confused with it, accidentalism any system of thought that denies the causal nexus and maintains that events succeed one another haphazardly or by chance. In metaphysics, accidentalism denies the doctrine that everything occurs or results from a definite cause, in this connection it is synonymous with tychism, a term used by Charles Sanders Peirce for the theories that make chance an objective factor in the process of the Universe. Acosmism in contrast to pantheism, denies the reality of the universe, seeing it as ultimately illusory and this philosophy begins with the recognition that there is only one Reality, which is infinite, non-dual, blissful, etc. Yet the phenomenal reality of which humans are normally aware is none of these things, dualistic, finite, full of suffering and pain, and so on. And since the Absolute is the reality, that means that everything that is not-Absolute cannot be real. Thus, according to this viewpoint, the dualistic world is ultimately an illusion. Aestheticism another name for the Aesthetic movement, a loosely defined movement in art, proponents of the movement held that art does not have any didactic purpose, it need only be beautiful. Agnostic atheism the philosophical view that encompasses both atheism and agnosticism, agnostic theism the philosophical view that encompasses both theism and agnosticism. An agnostic theist is one who views that the value of claims regarding the existence of god is unknown or inherently unknowable. Weak agnosticism the position that the evidence is such that the existence or nonexistence of deities is currently unknown, also called implicit agnosticism, empirical agnosticism, and negative agnosticism. Altruism the belief people have a moral obligation to serve others or the greater good. Generally opposed to self-interest or egoism, anarchism in politics, any of a number of views and movements that advocate the elimination of rulership or government. Other than being opposed to the state, there is no single defining position that all anarchists hold, anarcho-primitivism an anarchist critique of the origins and progress of civilization. Primitivists argue that the shift from hunter-gatherer to agricultural subsistence gave rise to social stratification, coercion and they advocate a return to non-civilized ways of life through deindustrialisation, abolition of division of labour or specialization, and abandonment of technology. Anarcho-syndicalism a form of anarchism that allies itself with syndicalism, that is, with labor unions, anarcho-syndicalists seek to replace capitalism and the state with a democratically worker-managed means of production

Philosophy
–
Philosophy is the study of general and fundamental problems concerning matters such as existence, knowledge, values, reason, mind, and language. The term was coined by Pythagoras. Philosophical methods include questioning, critical discussion, rational argument and systematic presentation, classic philosophical questions include, Is it possible to

1.
René Descartes

2.
Thomas Aquinas

3.
Jeremy Bentham

4.
Thomas Hobbes

Plato
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Plato was a philosopher in Classical Greece and the founder of the Academy in Athens, the first institution of higher learning in the Western world. He is widely considered the most pivotal figure in the development of philosophy, unlike nearly all of his philosophical contemporaries, Platos entire work is believed to have survived intact for over

1.
Plato: copy of portrait bust by Silanion

2.
Plato from The School of Athens by Raphael, 1509

3.
Plato and Socrates in a medieval depiction

4.
Plato (left) and Aristotle (right), a detail of The School of Athens, a fresco by Raphael. Aristotle gestures to the earth, representing his belief in knowledge through empirical observation and experience, while holding a copy of his Nicomachean Ethics in his hand. Plato holds his Timaeus and gestures to the heavens, representing his belief in The Forms

Immanuel Kant
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Immanuel Kant was a German philosopher who is considered a central figure in modern philosophy. Kant took himself to have effected a Copernican revolution in philosophy and his beliefs continue to have a major influence on contemporary philosophy, especially the fields of metaphysics, epistemology, ethics, political theory, and aesthetics. Politica

1.
Immanuel Kant

3.
Immanuel Kant by Carle Vernet (1758-1836)

Friedrich Nietzsche
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He began his career as a classical philologist before turning to philosophy. He became the youngest ever to hold the Chair of Classical Philology at the University of Basel in 1869, Nietzsche resigned in 1879 due to health problems that plagued him most of his life, and he completed much of his core writing in the following decade. In 1889, at age

Gautama Buddha
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Gautama Buddha, also known as Siddhārtha Gautama, Shakyamuni Buddha, or simply the Buddha, after the title of Buddha, was an ascetic and sage, on whose teachings Buddhism was founded. He is believed to have lived and taught mostly in the part of ancient India sometime between the sixth and fourth centuries BCE. Gautama taught a Middle Way between s

Confucius
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Confucius was a Chinese teacher, editor, politician, and philosopher of the Spring and Autumn period of Chinese history. The philosophy of Confucius emphasized personal and governmental morality, correctness of social relationships, justice and his followers competed successfully with many other schools during the Hundred Schools of Thought era onl

1.
A portrait of Confucius by the Tang dynasty artist Wu Daozi (680–740)

2.
Lu can be seen in China's northeast.

3.
The Dacheng Hall, the main hall of the Temple of Confucius in Qufu

4.
The Analects of Confucius

Averroes
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Ibn Rushd, full name, often Latinized as Averroes, was a medieval Andalusian polymath. Ibn Rushd was born in Córdoba, Al Andalus, and died at Marrakesh in present-day Morocco and his body was interred in his family tomb at Córdoba. The 13th-century philosophical movement in Latin Christian and Jewish tradition based on Ibn Rushds work is called Ave

1.
Statue of Averroes in Córdoba, Spain

2.
Averroes was the preeminent philosopher in the history of Al-Andalus.

Analytic philosophy
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Analytic philosophy is a style of philosophy that became dominant in English-speaking countries at the beginning of the 20th century. In the United Kingdom, United States, Canada, Australia, New Zealand, and Scandinavia, as a historical development, analytical philosophy refers to certain developments in early 20th-century philosophy that were the

1.
Plato – Kant – Nietzsche

Aristotelianism
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Aristotelianism is a tradition of philosophy that takes its defining inspiration from the work of Aristotle. The works of Aristotle were initially defended by the members of the Peripatetic school, and, later on, by the Neoplatonists, who produced many commentaries on Aristotles writings. Moses Maimonides adopted Aristotelianism from the Islamic sc

1.
Aristotelianism

2.
Aristotle, by Francesco Hayez

Buddhist philosophy
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Indian Buddhists sought this understanding not just from the revealed teachings of the Buddha, but through philosophical analysis and rational deliberation. Buddhist thinkers in India and subsequently in East Asia have covered topics as varied as phenomenology, ethics, ontology, epistemology, logic, a recurrent theme in Buddhist philosophy has been

1.
Gautama Buddha surrounded by followers, from an 18th century Burmese watercolour

Chinese philosophy
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Early Shang Dynasty thought was based upon cycles. Thus, this notion, which remained relevant throughout Chinese history, in juxtaposition, it also marks a fundamental distinction from western philosophy, in which the dominant view of time is a linear progression. During the Shang, fate could be manipulated by great deities, ancestor worship was pr

1.
Yin and Yang symbol with the bagua symbols paved in a clearing outside of Nanning City, Guangxi province, China.

Continental philosophy
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Continental philosophy is a set of 19th- and 20th-century philosophical traditions from mainland Europe. This sense of the term originated among English-speaking philosophers in the half of the 20th century. It is difficult to identify non-trivial claims that would be common to all the preceding philosophical movements, the term continental philoso

1.
Plato – Kant – Nietzsche

Existentialism
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While the predominant value of existentialist thought is commonly acknowledged to be freedom, its primary virtue is authenticity. Many existentialists have also regarded traditional systematic or academic philosophies, in style and content, as too abstract and remote from concrete human experience. Søren Kierkegaard is generally considered to have

1.
From left to right, top to bottom: Kierkegaard, Dostoyevsky, Nietzsche, Sartre

2.
French philosophers Jean-Paul Sartre and Simone de Beauvoir

3.
French-Algerian philosopher, novelist, and playwright Albert Camus

Jain philosophy
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Jain philosophy is the oldest Indian philosophy that separates body from the soul completely. Jain philosophy deals with reality, cosmology, epistemology and Vitalism, the concept of non-injury or ahiṃsā lies at the core of Jain philosophy. Jain philosophy attempts to explain the rationale of being and existence, the nature of the Universe and its

1.
Karma as action and reaction: if we sow goodness, we will reap goodness.

2.
Division of time as envisaged by Jains.

3.
Structure of Universe according to the Jain scriptures.

4.
Aspects of Violence (Himsa)

Jewish philosophy
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Jewish philosophy includes all philosophy carried out by Jews, or in relation to the religion of Judaism. With their acceptance into society, Jews with secular educations embraced or developed entirely new philosophies to meet the demands of the world in which they now found themselves. Medieval re-discovery of ancient Greek philosophy among the Ge

1.
Philo

2.
Artist's depiction, sculpture of Maimonides

3.
Isaac Abrabanel

Pragmatism
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Pragmatism is a philosophical tradition that began in the United States around 1870. Charles Sanders Peirce, generally considered to be its founder, later described it in his pragmatic maxim, then, your conception of those effects is the whole of your conception of the object. Pragmatism rejects the idea that the function of thought is to describe,

1.
Charles Peirce (/ˈpɜrs/ like "purse"): the American polymath who first identified pragmatism

2.
Hilary Putnam asserts that the combination of antiskepticism and fallibilism is a central feature of pragmatism.

3.
The "Chicago Club" including Whitehead, Mead, and Dewey. Pragmatism is sometimes called American Pragmatism because so many of its proponents were and are Americans.

Eastern philosophy
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This is because in Asia there is no single unified philosophical tradition with a single root. Some Western thinkers claim that philosophy as such is only characteristic of Western cultures, martin Heidegger is even reported to have said that only Greek and German languages are suitable for philosophizing. It is still commonplace in Western univers

1.
Plato – Kant – Nietzsche

Islamic philosophy
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Islamic philosophy is the systematic investigation of problems connected with life, the universe, ethics, society, and so on as conducted in the Muslim world. Early Islamic philosophy began in the 2nd century AH of the Islamic calendar and this period began with al-Kindi in the 9th century and ended with Averroes at the end of 12th century. Ibn Kha

1.
An Arabic manuscript from the 13th century depicting Socrates (Soqrāt) in discussion with his pupils

Platonism
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Platonism, rendered as a proper noun, is the philosophy of Plato or the name of other philosophical systems considered closely derived from it. Lower case platonists need not accept any of the doctrines of Plato, in a narrower sense, the term might indicate the doctrine of Platonic realism. The forms are described in dialogues such as the Phaedo, S

1.
Plato from The School of Athens by Raphael, 1509

3.
Site of Plato's Academy in Athens

4.
Many Western churchmen, including Augustine of Hippo, have been influenced by Platonism

Western philosophy
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Western philosophy is the philosophical thought and work of the Western world. The word philosophy itself originated from the Hellenic, philosophia, literally, the scope of philosophy in the ancient understanding, and the writings of the ancient philosophers, were all intellectual endeavors. Western Philosophy is generally said to begin in the Gree

1.
History of Western philosophy

Ancient philosophy
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This page lists some links to ancient philosophy. Genuinely philosophical thought, depending upon original individual insights, arose in many cultures roughly contemporaneously, karl Jaspers termed the intense period of philosophical development beginning around the 7th century and concluding around the 3rd century BCE an Axial Age in human thought

1.
Raphael 's School of Athens, depicting an array of ancient Greek philosophers engaged in discussion.

2.
History of Western philosophy

3.
Plotinus

4.
Vyasa, at middle of the picture

Medieval philosophy
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Modern historians consider the medieval era to be one of philosophical development, heavily influenced by Christian theology. However, their theology used the methods and logical techniques of the ancient philosophers to address theological questions. Thomas Aquinas, following Peter Damian, argued that philosophy is the handmaiden of theology, the

Modern philosophy
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Modern philosophy is philosophy developed in the modern era and associated with modernity. It is not a doctrine or school, although there are certain assumptions common to much of it. The 17th and early 20th centuries roughly mark the beginning and the end of modern philosophy, how much if any of the Renaissance should be included is a matter for d

1.
History of Western philosophy

Contemporary philosophy
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The phrase contemporary philosophy is a piece of technical terminology in philosophy that refers to a specific period in the history of Western philosophy. However, the phrase is often confused with philosophy, postmodern philosophy. No longer will researches usually be embodied in books addressed to anyone who might be interested in the matter of

1.
Existentialism is an important school in the continental philosophical tradition. Four key existentialists pictured from top-left clockwise: Kierkegaard, Nietzsche, Kafka, Dostoevsky

2.
History of Western philosophy

Aesthetics
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Aesthetics is a branch of philosophy that explores the nature of art, beauty, and taste, with the creation and appreciation of beauty. It is more defined as the study of sensory or sensori-emotional values, sometimes called judgements of sentiment. More broadly, scholars in the field define aesthetics as critical reflection on art, in modern Englis

1.
Bronze sculpture, thought to be either Poseidon or Zeus, National Archaeological Museum of Athens

2.
Cubist painting by Georges Braque, Violin and Candlestick (1910)

3.
William Hogarth, self-portrait, 1745

4.
Example of the Dada aesthetic, Marcel Duchamp 's Fountain 1917

Epistemology
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Epistemology is the branch of philosophy concerned with the theory of knowledge. Epistemology studies the nature of knowledge, justification, and the rationality of belief, the term Epistemology was first used by Scottish philosopher James Frederick Ferrier in 1854. However, according to Brett Warren, King James VI of Scotland had previously person

1.
Plato – Kant – Nietzsche

Ethics
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Ethics or moral philosophy is a branch of philosophy that involves systematizing, defending, and recommending concepts of right and wrong conduct. The term ethics derives from the Ancient Greek word ἠθικός ethikos, the branch of philosophy axiology comprises the sub-branches of ethics and aesthetics, each concerned with values. As a branch of philo

1.
Socrates

2.
Plato – Kant – Nietzsche

3.
Immanuel Kant

Philosophy of law
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Philosophy of law is a branch of philosophy and jurisprudence that seeks to answer basic questions about law and legal systems, such as What is law. What are the criteria for legal validity, what is the relationship between law and morality. The principal objective of Analytical jurisprudence has traditionally been to provide an account of what dis

1.
Plato – Kant – Nietzsche

Logic
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Logic, originally meaning the word or what is spoken, is generally held to consist of the systematic study of the form of arguments. A valid argument is one where there is a relation of logical support between the assumptions of the argument and its conclusion. Historically, logic has been studied in philosophy and mathematics, and recently logic h

1.
Aristotle, 384–322 BCE.

Metaphysics
–
Metaphysics is a branch of philosophy exploring the fundamental nature of reality. In this vein, metaphysics seeks to answer two questions, Ultimately, what is there. Topics of metaphysical investigation include existence, objects and their properties, space and time, cause and effect, a central branch of metaphysics is ontology, the investigation

1.
Plato – Kant – Nietzsche

Political philosophy
–
In a vernacular sense, the term political philosophy often refers to a general view, or specific ethic, political belief or attitude, about politics, synonymous to the term political ideology. Chinese political philosophy dates back to the Spring and Autumn period, Chinese political philosophy was developed as a response to the social and political

1.
Plato (left) and Aristotle (right), from a detail of The School of Athens, a fresco by Raphael. Plato's Republic and Aristotle's Politics secured the two Greek philosophers as two of the most influential political philosophers.

2.
Eugène Delacroix's Liberty Leading the People (1830, Louvre), a painting created at a time when old and modern political philosophies came into violent conflict.

Social philosophy
–
In a vernacular sense, the term political philosophy often refers to a general view, or specific ethic, political belief or attitude, about politics, synonymous to the term political ideology. Chinese political philosophy dates back to the Spring and Autumn period, Chinese political philosophy was developed as a response to the social and political

1.
Plato (left) and Aristotle (right), from a detail of The School of Athens, a fresco by Raphael. Plato's Republic and Aristotle's Politics secured the two Greek philosophers as two of the most influential political philosophers.

2.
Plato – Kant – Nietzsche

3.
Eugène Delacroix's Liberty Leading the People (1830, Louvre), a painting created at a time when old and modern political philosophies came into violent conflict.

List of unsolved problems in philosophy
–
This is a list of some of the major unsolved problems in philosophy. Clearly, unsolved philosophical problems exist in the lay sense, however, professional philosophers generally accord serious philosophical problems specific names or questions, which indicate a particular method of attack or line of reasoning. As a result, broad and untenable topi

1.
Plato – Kant – Nietzsche

List of important publications in philosophy
–
This is a list of important publications in philosophy, organized by field. AD397 Augustine of Hippo, The City of God, early 5th century Boethius, Consolation of Philosophy, moore, A Defence of Common Sense Edmund Gettier, Is Justified True Belief Knowledge. Armstrong, Universals and Scientific Realism W. V. O, quine, Two Dogmas of Empiricism W. V.

Glossary of philosophy
–
A glossary of terms used in philosophy. Absolutism Enlightened absolutism a form of governing by rulers who were influenced by the Enlightenment, moral absolutism the position that there are absolute standards against which moral questions can be judged, and that certain actions are right or wrong, regardless of the context of the act. Political ab

1.
A definition states the meaning of a word using other words. This is sometimes challenging. Common dictionaries contain lexical, descriptive definitions, but there are various types of definition - all with different purposes and focuses.

2.
A marble block in Carrara. Could there be a particular sculpture already existing in it as a potentiality? Aristotle wrote approvingly of such ways of talking, and felt it reflected a type of causation in nature which is often ignored in scientific discussion.

3.
Gottfried Wilhelm von Leibniz, the source of the modern adaptations of Aristotle's concepts of potentiality and actuality.

1.
St. Isidore of Seville, a 7th-century Doctor of the Church, depicted by Murillo (c. 1628) with a book, common iconographical attribute for a doctor.

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The Four Great Doctors of the Western Church were often depicted in art, here by Pier Francesco Sacchi, c. 1516. From the left: Saint Augustine, Pope Gregory I, Saint Jerome, and Saint Ambrose, with their attributes.

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The opening to the Old English epic poem Beowulf, handwritten in half-uncial script: Hƿæt ƿē Gārde/na ingēar dagum þēod cyninga / þrym ge frunon... "Listen! We of the Spear-Danes from days of yore have heard of the glory of the folk-kings..."

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Julius Caesar 's Commentarii de Bello Gallico is one of the most famous classical Latin texts of the Golden Age of Latin. The unvarnished, journalistic style of this patrician general has long been taught as a model of the urbane Latin officially spoken and written in the floruit of the Roman republic.